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8x=2(5x-4)
We move all terms to the left:
8x-(2(5x-4))=0
We calculate terms in parentheses: -(2(5x-4)), so:We get rid of parentheses
2(5x-4)
We multiply parentheses
10x-8
Back to the equation:
-(10x-8)
8x-10x+8=0
We add all the numbers together, and all the variables
-2x+8=0
We move all terms containing x to the left, all other terms to the right
-2x=-8
x=-8/-2
x=+4
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