7d+15=2d-10

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Solution for 7d+15=2d-10 equation: 



7d+15=2d-10

We move all terms to the left:

7d+15-(2d-10)=0

We get rid of parentheses

7d-2d+10+15=0

We add all the numbers together, and all the variables

5d+25=0

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

5d=-25

d=-25/5

d=-5

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