-12d+9=-11d-8

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Solution for -12d+9=-11d-8 equation: 



-12d+9=-11d-8

We move all terms to the left:

-12d+9-(-11d-8)=0

We get rid of parentheses

-12d+11d+8+9=0

We add all the numbers together, and all the variables

-1d+17=0

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

-d=-17

d=-17/-1

d=+17

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