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3(x-1)=x+9
We simplify the equation to the form, which is simple to understand
3(x-1)=x+9
Reorder the terms in parentheses
+(+3x-3)=x+9
Remove unnecessary parentheses
+3x-3=+x+9
We move all terms containing x to the left and all other terms to the right.
+3x-1x=+9+3
We simplify left and right side of the equation.
+2x=+12
We divide both sides of the equation by 2 to get x.
x=6
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