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-20+3x=-8(5x+4)
We move all terms to the left:
-20+3x-(-8(5x+4))=0
We calculate terms in parentheses: -(-8(5x+4)), so:We get rid of parentheses
-8(5x+4)
We multiply parentheses
-40x-32
Back to the equation:
-(-40x-32)
3x+40x+32-20=0
We add all the numbers together, and all the variables
43x+12=0
We move all terms containing x to the left, all other terms to the right
43x=-12
x=-12/43
x=-12/43
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