25=2d+7

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Solution for 25=2d+7 equation: 



25=2d+7

We move all terms to the left:

25-(2d+7)=0

We get rid of parentheses

-2d-7+25=0

We add all the numbers together, and all the variables

-2d+18=0

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

-2d=-18

d=-18/-2

d=+9

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