-4d+9=2d-9

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Solution for -4d+9=2d-9 equation: 



-4d+9=2d-9

We move all terms to the left:

-4d+9-(2d-9)=0

We get rid of parentheses

-4d-2d+9+9=0

We add all the numbers together, and all the variables

-6d+18=0

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

-6d=-18

d=-18/-6

d=+3

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