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19-42=3(x-1)-8
We move all terms to the left:
19-42-(3(x-1)-8)=0
We add all the numbers together, and all the variables
-(3(x-1)-8)-23=0
We calculate terms in parentheses: -(3(x-1)-8), so:We get rid of parentheses
3(x-1)-8
We multiply parentheses
3x-3-8
We add all the numbers together, and all the variables
3x-11
Back to the equation:
-(3x-11)
-3x+11-23=0
We add all the numbers together, and all the variables
-3x-12=0
We move all terms containing x to the left, all other terms to the right
-3x=12
x=12/-3
x=-4
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