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34=2x-4(2x-2.5)
We move all terms to the left:
34-(2x-4(2x-2.5))=0
We calculate terms in parentheses: -(2x-4(2x-2.5)), so:We get rid of parentheses
2x-4(2x-2.5)
We multiply parentheses
2x-8x+10
We add all the numbers together, and all the variables
-6x+10
Back to the equation:
-(-6x+10)
6x-10+34=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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