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x/2.5=-18
We move all terms to the left:
x/2.5-(-18)=0
We add all the numbers together, and all the variables
x/2.5+18=0
We multiply all the terms by the denominator
x+18*2.5=0
We add all the numbers together, and all the variables
x+45=0
We move all terms containing x to the left, all other terms to the right
x=-45
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