2.5d+7.5=20

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Solution for 2.5d+7.5=20 equation: 



2.5d+7.5=20

We move all terms to the left:

2.5d+7.5-(20)=0

We add all the numbers together, and all the variables

2.5d-12.5=0

We move all terms containing d to the left, all other terms to the right

2.5d=12.5

d=12.5/2.5

d=5

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