.10d+.25(d+7)=5.25

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Solution for .10d+.25(d+7)=5.25 equation: 



.10d+.25(d+7)=5.25

We move all terms to the left:

.10d+.25(d+7)-(5.25)=0

We add all the numbers together, and all the variables

.10d+.25(d+7)-5.25=0

We multiply parentheses

.10d+0.25d+1.75-5.25=0

We add all the numbers together, and all the variables

0.35d-3.5=0

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

0.35d=3.5

d=3.5/0.35

d=10

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