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(d-7.2)/4=2
We move all terms to the left:
(d-7.2)/4-(2)=0
We multiply all the terms by the denominator
(d-7.2)-2*4=0
We add all the numbers together, and all the variables
(d-7.2)-8=0
We get rid of parentheses
d-7.2-8=0
We add all the numbers together, and all the variables
d-15.2=0
We move all terms containing d to the left, all other terms to the right
d=15.2
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