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-54=7(x-3)
We move all terms to the left:
-54-(7(x-3))=0
We calculate terms in parentheses: -(7(x-3)), so:We get rid of parentheses
7(x-3)
We multiply parentheses
7x-21
Back to the equation:
-(7x-21)
-7x+21-54=0
We add all the numbers together, and all the variables
-7x-33=0
We move all terms containing x to the left, all other terms to the right
-7x=33
x=33/-7
x=-4+5/7
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