-d-7=-9+d

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Solution for -d-7=-9+d equation: 



-d-7=-9+d

We move all terms to the left:

-d-7-(-9+d)=0

We add all the numbers together, and all the variables

-d-(d-9)-7=0

We add all the numbers together, and all the variables

-1d-(d-9)-7=0

We get rid of parentheses

-1d-d+9-7=0

We add all the numbers together, and all the variables

-2d+2=0

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

-2d=-2

d=-2/-2

d=1

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