-3d-4+12d=77

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Solution for -3d-4+12d=77 equation:



-3d-4+12d=77
We move all terms to the left:
-3d-4+12d-(77)=0
We add all the numbers together, and all the variables
9d-81=0
We move all terms containing d to the left, all other terms to the right
9d=81
d=81/9
d=9

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