15-7d=12

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Solution for 15-7d=12 equation: 



15-7d=12

We move all terms to the left:

15-7d-(12)=0

We add all the numbers together, and all the variables

-7d+3=0

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

-7d=-3

d=-3/-7

d=3/7

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