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180=15x-57
We move all terms to the left:
180-(15x-57)=0
We get rid of parentheses
-15x+57+180=0
We add all the numbers together, and all the variables
-15x+237=0
We move all terms containing x to the left, all other terms to the right
-15x=-237
x=-237/-15
x=15+4/5
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