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2x-4=-4(x-5)
We move all terms to the left:
2x-4-(-4(x-5))=0
We calculate terms in parentheses: -(-4(x-5)), so:We get rid of parentheses
-4(x-5)
We multiply parentheses
-4x+20
Back to the equation:
-(-4x+20)
2x+4x-20-4=0
We add all the numbers together, and all the variables
6x-24=0
We move all terms containing x to the left, all other terms to the right
6x=24
x=24/6
x=4
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