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A fraction means division. THe top number is divided by the bottom number.

14v+6=2(5+7v)-4

Let's simplify the right side. Start by dividing both sides by 2.

7v+3=(5+7v)-2

Then add 2 to both sides

7v+5=5+7v

from here you see that they are exactly equal to each other so you could stop and say v=1

but that doesnt always happen so lets continue. subtract 5 from both sides

7v=7v

divide both sides by 7

v=v

1v/1v the v's cancel and you get 1. v=1

you keep the 3 and turn the .45 into 45/100. then you simplify 45/100 into 9/20. you put the 3 with 9/20 to get 3 9/20.

1/2(t+5)=30

*2 to both sides to cancel the half

t+5=60

-5 to both sides to cancel the +5

t = 55

That is not a valid operation. You can't divide by zero. Normally with zero in the numerator, the answer is zero, but equally normally, anything dividided by itself equals one. So 0/0 doesn't work.

If you take the function, y=x/x, and you plot the graph, it will look like a horizontal straight line going through y=1.  So it looks like the answer must be 1. But to be correct, 0 is not in the domain of that function. Similarly to plotting the function y=1/x, again, is not in the domain.

0/0 just doesn't work.

0 / 0   is known as an "indeterminate" form.......we can't say WHAT it might be

what is 3.45 in fraction

3.45 X (100/100)

345/100

69/20

=3 9/20

sqrt(144)  = 12

4n^2-16n-14=6  add 14 to both sides

4n^2 - 16n   = 20    divide through by 4

n^2 - 4n  =  5          take (1/2)  of  (-4)  = (-2)....square it = 4 and add to both sides

n^2 - 4n + 4 = 5 + 4      factor the left side, simplify the right

(n - 2) (n -2)  = 9

(n - 2)^2   = 9        take the positive and negative roots of both sides

n - 2   = (plus/minus)( 3)

So

n - 2 = 3     and n = 5     or

n - 2 = -3     and n = -1

(n-5)(n+1)=0

-3^2  = -9     but

(-3)^2  = 9

(What's Equivalent to 3x squared minus 5x plus 4) plus (2x squared minus 7)

3x^2 - 5x + 4 + 2x^2 - 7  =   [combine like terms ]

5x^2 - 5x - 3

Can you challenge us with an example?

Here's a good resource for this :  http://www.purplemath.com/modules/ratio4.htm

Volume of sphere=4/3.Pi.(2x)^3=Volume of cone=Pi.x^2.(h/3)

4/3*Pi*(2x)^3=Pi*x^2*(h/3)

h = 32x

Vcone  = (1/3)8pi * r^2 * h

Vsphere  = (4/3) * pi * r^3

So

(1/3)*pi * (x)^2 * h  = (4/3) * pi * (2x)^3   divide through by pi

(1/3) * (x)^2 * h  = (4/3) *  (2x)^3    multiply through by 3

 (x)^2 * h   = 4 * (2x)^3     simplify

x^2 * h = 32x^3    divide through by x^2

h = 32x

5x-8y= z solve for y

y = 1/8 (5x-z)

C=5/9 (F-32) Solve for F

F = (9 C)/5+32

2a-3a=6-7a

-a=6-7a

-a+7a=6

6a=6

a=6/6

a=1

\((-8) \times (-8) \times (-8) \times(-8)=(-8)^4=4\;096\)

Just put it into the onsite calculator  like this : 19 - 1h - 1h = -13.......then, hit "="

How whould u solve this question with this calculator.. 19 – h – h = –13

19 – h – h = –13

-2h=13-19

-2h=-32

h=-32/-2

h=16

Thanks for that good answer, hellokittygirl56....!!!!

-1+3p=p+1

+1          +1

3p=p+2

-p  -p

2p=2

2p/2    2/2

p=1