(3x-31)=x+7

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Solution for (3x-31)=x+7 equation: 



(3x-31)=x+7

We move all terms to the left:

(3x-31)-(x+7)=0

We get rid of parentheses

3x-x-31-7=0

We add all the numbers together, and all the variables

2x-38=0

We move all terms containing x to the left, all other terms to the right

2x=38

x=38/2

x=19

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