-4d-9=7

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Solution for -4d-9=7 equation: 



-4d-9=7

We move all terms to the left:

-4d-9-(7)=0

We add all the numbers together, and all the variables

-4d-16=0

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

-4d=16

d=16/-4

d=-4

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