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180=5x-42
We move all terms to the left:
180-(5x-42)=0
We get rid of parentheses
-5x+42+180=0
We add all the numbers together, and all the variables
-5x+222=0
We move all terms containing x to the left, all other terms to the right
-5x=-222
x=-222/-5
x=44+2/5
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