-d-6=-2d

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Solution for -d-6=-2d equation: 



-d-6=-2d

We move all terms to the left:

-d-6-(-2d)=0

We add all the numbers together, and all the variables

-1d-(-2d)-6=0

We get rid of parentheses

-1d+2d-6=0

We add all the numbers together, and all the variables

d-6=0

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

d=6

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