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3x-4+5x=2(2-4x)
We move all terms to the left:
3x-4+5x-(2(2-4x))=0
We add all the numbers together, and all the variables
3x+5x-(2(-4x+2))-4=0
We add all the numbers together, and all the variables
8x-(2(-4x+2))-4=0
We calculate terms in parentheses: -(2(-4x+2)), so:We get rid of parentheses
2(-4x+2)
We multiply parentheses
-8x+4
Back to the equation:
-(-8x+4)
8x+8x-4-4=0
We add all the numbers together, and all the variables
16x-8=0
We move all terms containing x to the left, all other terms to the right
16x=8
x=8/16
x=1/2
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