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-7(7+x)=-84
We move all terms to the left:
-7(7+x)-(-84)=0
We add all the numbers together, and all the variables
-7(x+7)-(-84)=0
We add all the numbers together, and all the variables
-7(x+7)+84=0
We multiply parentheses
-7x-49+84=0
We add all the numbers together, and all the variables
-7x+35=0
We move all terms containing x to the left, all other terms to the right
-7x=-35
x=-35/-7
x=+5
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