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5x-4=2(4x-5)
We move all terms to the left:
5x-4-(2(4x-5))=0
We calculate terms in parentheses: -(2(4x-5)), so:We get rid of parentheses
2(4x-5)
We multiply parentheses
8x-10
Back to the equation:
-(8x-10)
5x-8x+10-4=0
We add all the numbers together, and all the variables
-3x+6=0
We move all terms containing x to the left, all other terms to the right
-3x=-6
x=-6/-3
x=+2
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