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-2x=-4x-8
We move all terms to the left:
-2x-(-4x-8)=0
We get rid of parentheses
-2x+4x+8=0
We add all the numbers together, and all the variables
2x+8=0
We move all terms containing x to the left, all other terms to the right
2x=-8
x=-8/2
x=-4
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