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-12x-70+72=15x+20
We move all terms to the left:
-12x-70+72-(15x+20)=0
We add all the numbers together, and all the variables
-12x-(15x+20)+2=0
We get rid of parentheses
-12x-15x-20+2=0
We add all the numbers together, and all the variables
-27x-18=0
We move all terms containing x to the left, all other terms to the right
-27x=18
x=18/-27
x=-2/3
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