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131=(4x+7)
We move all terms to the left:
131-((4x+7))=0
We calculate terms in parentheses: -((4x+7)), so:We get rid of parentheses
(4x+7)
We get rid of parentheses
4x+7
Back to the equation:
-(4x+7)
-4x-7+131=0
We add all the numbers together, and all the variables
-4x+124=0
We move all terms containing x to the left, all other terms to the right
-4x=-124
x=-124/-4
x=+31
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