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-3(6+3x)=-63
We move all terms to the left:
-3(6+3x)-(-63)=0
We add all the numbers together, and all the variables
-3(3x+6)-(-63)=0
We add all the numbers together, and all the variables
-3(3x+6)+63=0
We multiply parentheses
-9x-18+63=0
We add all the numbers together, and all the variables
-9x+45=0
We move all terms containing x to the left, all other terms to the right
-9x=-45
x=-45/-9
x=+5
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