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x-2(x+13)=12x
We move all terms to the left:
x-2(x+13)-(12x)=0
We add all the numbers together, and all the variables
-11x-2(x+13)=0
We multiply parentheses
-11x-2x-26=0
We add all the numbers together, and all the variables
-13x-26=0
We move all terms containing x to the left, all other terms to the right
-13x=26
x=26/-13
x=-2
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