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-118=7x+5(-4x-8)
We move all terms to the left:
-118-(7x+5(-4x-8))=0
We calculate terms in parentheses: -(7x+5(-4x-8)), so:We get rid of parentheses
7x+5(-4x-8)
We multiply parentheses
7x-20x-40
We add all the numbers together, and all the variables
-13x-40
Back to the equation:
-(-13x-40)
13x+40-118=0
We add all the numbers together, and all the variables
13x-78=0
We move all terms containing x to the left, all other terms to the right
13x=78
x=78/13
x=6
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