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(4x-13+31)/2=5x-9
We move all terms to the left:
(4x-13+31)/2-(5x-9)=0
We add all the numbers together, and all the variables
(4x+18)/2-(5x-9)=0
We get rid of parentheses
(4x+18)/2-5x+9=0
We multiply all the terms by the denominator
(4x+18)-5x*2+9*2=0
We add all the numbers together, and all the variables
(4x+18)-5x*2+18=0
Wy multiply elements
(4x+18)-10x+18=0
We get rid of parentheses
4x-10x+18+18=0
We add all the numbers together, and all the variables
-6x+36=0
We move all terms containing x to the left, all other terms to the right
-6x=-36
x=-36/-6
x=+6
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