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7(2x-4)-8x=-2(2x+5)+2
We move all terms to the left:
7(2x-4)-8x-(-2(2x+5)+2)=0
We add all the numbers together, and all the variables
-8x+7(2x-4)-(-2(2x+5)+2)=0
We multiply parentheses
-8x+14x-(-2(2x+5)+2)-28=0
We calculate terms in parentheses: -(-2(2x+5)+2), so:We add all the numbers together, and all the variables
-2(2x+5)+2
We multiply parentheses
-4x-10+2
We add all the numbers together, and all the variables
-4x-8
Back to the equation:
-(-4x-8)
6x-(-4x-8)-28=0
We get rid of parentheses
6x+4x+8-28=0
We add all the numbers together, and all the variables
10x-20=0
We move all terms containing x to the left, all other terms to the right
10x=20
x=20/10
x=2
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