-7d=-9d-6

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Solution for -7d=-9d-6 equation: 



-7d=-9d-6

We move all terms to the left:

-7d-(-9d-6)=0

We get rid of parentheses

-7d+9d+6=0

We add all the numbers together, and all the variables

2d+6=0

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

2d=-6

d=-6/2

d=-3

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