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What is one third plus three fourth minus one and one fifth?

1/3 + 3/4 - 1 - 1/5 =

1/3 + 3/4 - 6/5 =

20/60 + 45/60 - 72/60 =

65/60 - 72/60 = - 7/60

Hi  Eloise welcome to the forum :)

Your writing is amazing!

Mathematics is the abstract science of number, quantity, and space, either as abstract concepts (pure mathematics ), or as applied to other disciplines such as physics and engineering ( applied mathematics ).

But i do not understand what you mean by 'where is math?'

1 elephant in each home.

The answer is 40.

Hi, I found these maths sites I think are pretty good and thought you might like to hear about them:

Aplusmath.com
There are free maths activities such as worksheets, flashcards, games and a homework helper. The maths subjects they have are addition, subtraction, division, multiplication, fractions, geometry and algebra.

AAAMath.com
I’m not sure of the details but if you want to know more about this site you can look up:
AAAKnow.com or 321Know.com. For studying purposes look up AAAStudy.com.

Math is Fun.com
When you enter this site, at the top of the page there are different categories like:
Home, Algebra, Data, Geometry, Measure, Number, Dictionary, Games, Puzzles, and Worksheets.
Then in the middle of the page it puts all these categories in the form of images, with the exception that ‘home’ is replaced by Index.

Below that, there are a few more categories such as; Teachers page, Feature of the month, four in a line, Times Table, Have your say (this is where you can visit their maths forum), etc...

TenMarks.com
I’m not sure how this site works but I’ve been told that there’s a free teacher sign up.

MathsFrame.co.uk
Also a very good maths site with these categories:
Most Popular Free Maths Games, New Mathematics Curriculum (2014), Addition and Subtraction, Multiplication and Division, Ordering, Comparing and Reading Numbers, Word Problems, Using a Calculator, Fractions Decimals and Percentages, Measuring and Time, Shape and Space, Data Handling, Money, Sorting and Classifying, Partitioning and Place Value, Common Core Standards, Browse by Primary Framework Objectives, Latest Maths Games (updated 19th April 2015), Domino Games, Crystal Crash Games, and Mine Mayhem Games.

You can also register in on this site.

Math-Drills.com
This site has a ton of worksheets on every possible maths subject you can imagine.

That’s all I got, I’ve checked out a few of the sites I just mentioned and they’re pretty good.

Have fun checking them out!

oops, I misspelled   "challenge" 

I had a lot of fun solving this one using trigonometry. It's a chalange -- but, it can be done. Thanks Anon!

Hello anonymous!

a/b+b/a=5

a/b = x

x + 1/x = 5

x² + 1 = 5x

x² - 5x + 1 = 0

x1;2 = 2,5 +- √(2,5² -1)

x1 = 4,791287785

x2 = 0,208712153

a = 4,791287785 * b

a/b+b/a=5

4,791287785 * b / b + b / 4,791287785 * b = 5

4,791287785 + 1 / 4,791287785 = 5 

5 = 5

Help ! Where is my mistake ?

Regards  :- )

what is the pythagoras' if the value is 12cm 18cm and 8cm + ?cm

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

a = 12cm,   b = 18cm   and   c = (8cm + Xcm)

             a² + b² = c²

            12² + 18² = c²                  

          144 + 324 = 468

            X = sqrt(468) - 8

            X = 13.63cm

15 over 14 or 1 and one fourteenth

e^2x >37      take the ln of both sides

ln e^2x > ln 37     and we can write

2x ln e   > ln 37      and ln e = 1     ...  so we have

2x > ln 37     divide both sides by 2

x > ( ln 37) / 2  

x > 1.805

Thanks Chris. :)

Argh 

Did 60 instead of 68, I hope you don't mind...

(I tried to do it this time right!)

$${\frac{\left({\mathtt{34}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{8}}}}\right){\mathtt{\,\times\,}}\left({\frac{{\mathtt{14}}}{{\mathtt{15}}}}\right)}{\left({\mathtt{1}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{30}}}{{\mathtt{60}}}}\right)}} = {\frac{{\mathtt{637}}}{{\mathtt{30}}}} = {\mathtt{21.233\: \!333\: \!333\: \!333\: \!333\: \!3}}$$

And i got it... Wrong. 

\\34\frac{1}{8}\times\frac{14}{51}\div1\frac{30}{60}\\\\
34\frac{1}{8}\times\frac{14}{51}\div1\frac{30\div30}{60\div30}\\\\
34\frac{1}{8}\times\frac{14}{51}\div1\frac{1}{2}\\\\
\frac{8\times34+1}{8}\times\frac{14}{51}\div\frac{2\times1+1}{2}\\\\
\frac{273}{8}\times\frac{14}{51}\div\frac{3}{2}\\\\
\frac{273}{8}\times\frac{14}{51}\times\frac{2}{3}\\\\
\frac{273\div3}{8}\times\frac{14}{51\div3}\times\frac{2}{3}\\\\
\frac{91}{8}\times\frac{14}{17}\times\frac{2}{3}\\\\
\frac{91}{8\div2}\times\frac{14\div2}{17}\times\frac{2}{3}\\\\
\frac{91}{4}\times\frac{7}{17}\times\frac{2}{3}\\\\
\frac{91}{4\div2}\times\frac{7}{17}\times\frac{2\div2}{3}\\\\
\frac{91}{2}\times\frac{7}{17}\times\frac{1}{3}\\\\\\
\frac{91\times7}{2\times17}\\\\
=\;\frac{637}{34}\\\\
\frac{637\times1}{34\times3}\\\\
=\;\frac{637}{102}\\\\
=\;6\frac{25}{102}

(In Lated i do copy and paste when repeating to save time, apart from that this was what i typed in)

There are 15 in the Science club.  And of these, 80%,  (12)  are also in the Math club.

Let x be the number in the Math club. And  30% of those in the Math club are also in the Science club.

So

.30x = 12   x = 40    And this is the number of students in the Math club.

Here's a Venn diagram

Ok Melody, thanks for the example and racing to answer questions is a great opportunity, missing it would be dreadful. 

$$\\34\frac{1}{8}\times\frac{14}{51}\div1\frac{30}{60}\\\\
34\frac{1}{8}\times\frac{14}{51}\div1\frac{30\div30}{60\div30}\\\\
34\frac{1}{8}\times\frac{14}{51}\div1\frac{1}{2}\\\\
\frac{8\times34+1}{8}\times\frac{14}{51}\div\frac{2\times1+1}{2}\\\\
\frac{273}{8}\times\frac{14}{51}\div\frac{3}{2}\\\\
\frac{273}{8}\times\frac{14}{51}\times\frac{2}{3}\\\\
\frac{273\div3}{8}\times\frac{14}{51\div3}\times\frac{2}{3}\\\\$$

$$\\\frac{91}{8}\times\frac{14}{17}\times\frac{2}{3}\\\\
\frac{91}{8\div2}\times\frac{14\div2}{17}\times\frac{2}{3}\\\\
\frac{91}{4}\times\frac{7}{17}\times\frac{2}{3}\\\\
\frac{91}{4\div2}\times\frac{7}{17}\times\frac{2\div2}{3}\\\\
\frac{91}{2}\times\frac{7}{17}\times\frac{1}{3}\\\\\\
\frac{91\times7}{2\times17}\\\\
=\;\frac{637}{34}\\\\
\frac{637\times1}{34\times3}\\\\
=\;\frac{637}{102}\\\\
=\;6\frac{25}{102}$$

Subtraction is finding the difference between two numbers or more.

5-4= 1

The difference between 5 and 4 is 1.

There are many different synonyms for subtraction. 

E.g. Minus, take away, the difference etc...