31=7x+18

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Solution for 31=7x+18 equation: 



31=7x+18

We move all terms to the left:

31-(7x+18)=0

We get rid of parentheses

-7x-18+31=0

We add all the numbers together, and all the variables

-7x+13=0

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

-7x=-13

x=-13/-7

x=1+6/7

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