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7(4-5x)=63
We move all terms to the left:
7(4-5x)-(63)=0
We add all the numbers together, and all the variables
7(-5x+4)-63=0
We multiply parentheses
-35x+28-63=0
We add all the numbers together, and all the variables
-35x-35=0
We move all terms containing x to the left, all other terms to the right
-35x=35
x=35/-35
x=-1
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