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9x-8=-5(x-4)
We move all terms to the left:
9x-8-(-5(x-4))=0
We calculate terms in parentheses: -(-5(x-4)), so:We get rid of parentheses
-5(x-4)
We multiply parentheses
-5x+20
Back to the equation:
-(-5x+20)
9x+5x-20-8=0
We add all the numbers together, and all the variables
14x-28=0
We move all terms containing x to the left, all other terms to the right
14x=28
x=28/14
x=2
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