7x-11=31+x

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Solution for 7x-11=31+x equation: 



7x-11=31+x

We move all terms to the left:

7x-11-(31+x)=0

We add all the numbers together, and all the variables

7x-(x+31)-11=0

We get rid of parentheses

7x-x-31-11=0

We add all the numbers together, and all the variables

6x-42=0

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

6x=42

x=42/6

x=7

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