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d/13.5=-2
We move all terms to the left:
d/13.5-(-2)=0
We add all the numbers together, and all the variables
d/13.5+2=0
We multiply all the terms by the denominator
d+2*13.5=0
We add all the numbers together, and all the variables
d+27=0
We move all terms containing d to the left, all other terms to the right
d=-27
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