-d+1=7+2d

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Solution for -d+1=7+2d equation: 



-d+1=7+2d

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-1d-2d-7+1=0

We add all the numbers together, and all the variables

-3d-6=0

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

-3d=6

d=6/-3

d=-2

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