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-13x+12=13x-14
We move all terms to the left:
-13x+12-(13x-14)=0
We get rid of parentheses
-13x-13x+14+12=0
We add all the numbers together, and all the variables
-26x+26=0
We move all terms containing x to the left, all other terms to the right
-26x=-26
x=-26/-26
x=1
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