31=-2(1-x)+5(x+1)

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Solution for 31=-2(1-x)+5(x+1) equation:



31=-2(1-x)+5(x+1)
We move all terms to the left:
31-(-2(1-x)+5(x+1))=0
We add all the numbers together, and all the variables
-(-2(-1x+1)+5(x+1))+31=0
We calculate terms in parentheses: -(-2(-1x+1)+5(x+1)), so:
-2(-1x+1)+5(x+1)
We multiply parentheses
2x+5x-2+5
We add all the numbers together, and all the variables
7x+3
Back to the equation:
-(7x+3)
We get rid of parentheses
-7x-3+31=0
We add all the numbers together, and all the variables
-7x+28=0
We move all terms containing x to the left, all other terms to the right
-7x=-28
x=-28/-7
x=+4

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