31+x=2(8+x)

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Solution for 31+x=2(8+x) equation: 



31+x=2(8+x)

We move all terms to the left:

31+x-(2(8+x))=0

We add all the numbers together, and all the variables

x-(2(x+8))+31=0



We calculate terms in parentheses: -(2(x+8)), so:

2(x+8)

We multiply parentheses

2x+16

Back to the equation:

-(2x+16)



We get rid of parentheses

x-2x-16+31=0

We add all the numbers together, and all the variables

-1x+15=0

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

-x=-15

x=-15/-1

x=+15

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