12d+7=10d-15

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Solution for 12d+7=10d-15 equation: 



12d+7=10d-15

We move all terms to the left:

12d+7-(10d-15)=0

We get rid of parentheses

12d-10d+15+7=0

We add all the numbers together, and all the variables

2d+22=0

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

2d=-22

d=-22/2

d=-11

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