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12x=15x-1250
We move all terms to the left:
12x-(15x-1250)=0
We get rid of parentheses
12x-15x+1250=0
We add all the numbers together, and all the variables
-3x+1250=0
We move all terms containing x to the left, all other terms to the right
-3x=-1250
x=-1250/-3
x=416+2/3
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