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-2x-100=100-12
We move all terms to the left:
-2x-100-(100-12)=0
We add all the numbers together, and all the variables
-2x-100-88=0
We add all the numbers together, and all the variables
-2x-188=0
We move all terms containing x to the left, all other terms to the right
-2x=188
x=188/-2
x=-94
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