-x+31=7x-81

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Solution for -x+31=7x-81 equation: 



-x+31=7x-81

We move all terms to the left:

-x+31-(7x-81)=0

We add all the numbers together, and all the variables

-1x-(7x-81)+31=0

We get rid of parentheses

-1x-7x+81+31=0

We add all the numbers together, and all the variables

-8x+112=0

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

-8x=-112

x=-112/-8

x=+14

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