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(3-5x)+(7x+7)=-84
We move all terms to the left:
(3-5x)+(7x+7)-(-84)=0
We add all the numbers together, and all the variables
(-5x+3)+(7x+7)-(-84)=0
We add all the numbers together, and all the variables
(-5x+3)+(7x+7)+84=0
We get rid of parentheses
-5x+7x+3+7+84=0
We add all the numbers together, and all the variables
2x+94=0
We move all terms containing x to the left, all other terms to the right
2x=-94
x=-94/2
x=-47
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