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100=4-8x
We move all terms to the left:
100-(4-8x)=0
We add all the numbers together, and all the variables
-(-8x+4)+100=0
We get rid of parentheses
8x-4+100=0
We add all the numbers together, and all the variables
8x+96=0
We move all terms containing x to the left, all other terms to the right
8x=-96
x=-96/8
x=-12
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