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-x/3+3=20
We move all terms to the left:
-x/3+3-(20)=0
We add all the numbers together, and all the variables
-x/3-17=0
We multiply all the terms by the denominator
-x-17*3=0
We add all the numbers together, and all the variables
-1x-51=0
We move all terms containing x to the left, all other terms to the right
-x=51
x=51/-1
x=-51
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