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x.x/3=-6
We move all terms to the left:
x.x/3-(-6)=0
We add all the numbers together, and all the variables
x.x/3+6=0
We multiply all the terms by the denominator
x.x+6*3=0
We add all the numbers together, and all the variables
x.x+18=0
We move all terms containing x to the left, all other terms to the right
x.x=-18
x=-18/1
x=-18
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