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5.1(-20+5d)=-7
We move all terms to the left:
5.1(-20+5d)-(-7)=0
We add all the numbers together, and all the variables
5.1(5d-20)-(-7)=0
We add all the numbers together, and all the variables
5.1(5d-20)+7=0
We multiply parentheses
25.5d-102+7=0
We add all the numbers together, and all the variables
25.5d-95=0
We move all terms containing d to the left, all other terms to the right
25.5d=95
d=95/25.5
d=3+12.333333333333/17
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