-1-d=-9+3d

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Solution for -1-d=-9+3d equation: 



-1-d=-9+3d

We move all terms to the left:

-1-d-(-9+3d)=0

We add all the numbers together, and all the variables

-d-(3d-9)-1=0

We add all the numbers together, and all the variables

-1d-(3d-9)-1=0

We get rid of parentheses

-1d-3d+9-1=0

We add all the numbers together, and all the variables

-4d+8=0

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

-4d=-8

d=-8/-4

d=+2

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