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-5(7-7x)=-455
We move all terms to the left:
-5(7-7x)-(-455)=0
We add all the numbers together, and all the variables
-5(-7x+7)-(-455)=0
We add all the numbers together, and all the variables
-5(-7x+7)+455=0
We multiply parentheses
35x-35+455=0
We add all the numbers together, and all the variables
35x+420=0
We move all terms containing x to the left, all other terms to the right
35x=-420
x=-420/35
x=-12
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