d+7=2d-4d-8

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Solution for d+7=2d-4d-8 equation: 



d+7=2d-4d-8

We move all terms to the left:

d+7-(2d-4d-8)=0

We add all the numbers together, and all the variables

d-(-2d-8)+7=0

We get rid of parentheses

d+2d+8+7=0

We add all the numbers together, and all the variables

3d+15=0

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

3d=-15

d=-15/3

d=-5

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