7x-31=15+9x

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Solution for 7x-31=15+9x equation: 



7x-31=15+9x

We move all terms to the left:

7x-31-(15+9x)=0

We add all the numbers together, and all the variables

7x-(9x+15)-31=0

We get rid of parentheses

7x-9x-15-31=0

We add all the numbers together, and all the variables

-2x-46=0

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

-2x=46

x=46/-2

x=-23

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