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-49-x=-8x+7
We move all terms to the left:
-49-x-(-8x+7)=0
We add all the numbers together, and all the variables
-1x-(-8x+7)-49=0
We get rid of parentheses
-1x+8x-7-49=0
We add all the numbers together, and all the variables
7x-56=0
We move all terms containing x to the left, all other terms to the right
7x=56
x=56/7
x=8
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