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28=-8x+2(x-4)
We move all terms to the left:
28-(-8x+2(x-4))=0
We calculate terms in parentheses: -(-8x+2(x-4)), so:We get rid of parentheses
-8x+2(x-4)
We multiply parentheses
-8x+2x-8
We add all the numbers together, and all the variables
-6x-8
Back to the equation:
-(-6x-8)
6x+8+28=0
We add all the numbers together, and all the variables
6x+36=0
We move all terms containing x to the left, all other terms to the right
6x=-36
x=-36/6
x=-6
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