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-20+15x-20=x+5+12x
We move all terms to the left:
-20+15x-20-(x+5+12x)=0
We add all the numbers together, and all the variables
15x-(13x+5)-20-20=0
We add all the numbers together, and all the variables
15x-(13x+5)-40=0
We get rid of parentheses
15x-13x-5-40=0
We add all the numbers together, and all the variables
2x-45=0
We move all terms containing x to the left, all other terms to the right
2x=45
x=45/2
x=22+1/2
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