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-18+x/3=-5
We move all terms to the left:
-18+x/3-(-5)=0
We add all the numbers together, and all the variables
x/3-13=0
We multiply all the terms by the denominator
x-13*3=0
We add all the numbers together, and all the variables
x-39=0
We move all terms containing x to the left, all other terms to the right
x=39
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