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-142-13x=-x+74
We move all terms to the left:
-142-13x-(-x+74)=0
We add all the numbers together, and all the variables
-13x-(-1x+74)-142=0
We get rid of parentheses
-13x+1x-74-142=0
We add all the numbers together, and all the variables
-12x-216=0
We move all terms containing x to the left, all other terms to the right
-12x=216
x=216/-12
x=-18
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