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Free the x in 2x+1 over 3

Hey I have to simplify this by rewriting the division

 Dec 12, 2016

Best Answer 

 #1
avatar
+10

By "free the x", I assume you mean "solve for x":

 

Solve for x:
(2 x + 1)/3 = 0

Multiply both sides of (2 x + 1)/3 = 0 by 3:
1 (2 x + 1) = 3×0

(3 (2 x + 1))/3 = 3/3×(2 x + 1) = 2 x + 1:
2 x + 1 = 3×0

0×3 = 0:
2 x + 1 = 0

Subtract 1 from both sides:
2 x + (1 - 1) = -1

1 - 1 = 0:
2 x = -1

Divide both sides of 2 x = -1 by 2:
(2 x)/2 = (-1)/2

2/2 = 1:
Answer: |x = (-1)/2 =- 1/2

 Dec 12, 2016
 #1
avatar
+10
Best Answer

By "free the x", I assume you mean "solve for x":

 

Solve for x:
(2 x + 1)/3 = 0

Multiply both sides of (2 x + 1)/3 = 0 by 3:
1 (2 x + 1) = 3×0

(3 (2 x + 1))/3 = 3/3×(2 x + 1) = 2 x + 1:
2 x + 1 = 3×0

0×3 = 0:
2 x + 1 = 0

Subtract 1 from both sides:
2 x + (1 - 1) = -1

1 - 1 = 0:
2 x = -1

Divide both sides of 2 x = -1 by 2:
(2 x)/2 = (-1)/2

2/2 = 1:
Answer: |x = (-1)/2 =- 1/2

Guest Dec 12, 2016
 #2
avatar+36 
+5

Actually I'm not solving for x i have to free it from this fraction in conclusion I am simplifying the problem i don't have to solve the whole equation just simplify but thank you for that awesome answer!

sophie_torres  Dec 12, 2016
 #3
avatar+118654 
+5

Hi Sophie :)

 

Free the x in 2x+1 over 3

Hey I have to simplify this by rewriting the division

 

Perhaps this is what you mean?

 

\(\frac{2x+1}{3}=\frac{2x}{3}+\frac{1}{3}=\frac{2}{3}x+\frac{1}{3}\)

 

or

 

\(\frac{2x+1}{3}=(2x+1)\div3=2x\div3+1\div3\)

 Dec 12, 2016
 #4
avatar+36 
+5

Yay Thanks! It's correct! You rock Melody!

sophie_torres  Dec 12, 2016
 #5
avatar
+5

(2x +1) / 3, simplify: Put both terms under the same denominator of 3:

(2x)/3 + 1/3. That is all you can do with it.

 Dec 12, 2016
 #6
avatar+118654 
+5

Hi again Sophie,

I'd like to try and explain some stuff. :)

 

FIRST a fraction sign IS a division sign.  It even looks like a division sign!   

Think of the numbers on the top and bottom as dots and you have the stroke in the middle - that is a division sign laugh

 

also

Letters just take the place of numbers so if you can do somethng with numbers then you can do it with letters too.

 

also

 

\(\frac{3}{4}=\frac{1+2}{4}=\frac{1}{4}+\frac{2}{4}\\ so\\ \frac{1+a}{4}=\frac{1}{4}+\frac{a}{4}\\\)

 

etc

If you are not sure if you are allowed to do something with letters, replace those letters with numbers.

Now maybe you can see what you can or cannot do...

 

I hope that helps :))

 Dec 12, 2016
 #7
avatar+36 
+5

Thank you for being so helpful! I'll use that for next time laugh

sophie_torres  Dec 12, 2016

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