-d=-2d-7

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Solution for -d=-2d-7 equation: 



-d=-2d-7

We move all terms to the left:

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

We add all the numbers together, and all the variables

-1d-(-2d-7)=0

We get rid of parentheses

-1d+2d+7=0

We add all the numbers together, and all the variables

d+7=0

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

d=-7

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