12/d=-4

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Solution for 12/d=-4 equation: 



12/d=-4

We move all terms to the left:

12/d-(-4)=0



Domain of the equation: d!=0

d∈R



We add all the numbers together, and all the variables

12/d+4=0

We multiply all the terms by the denominator


4*d+12=0

We add all the numbers together, and all the variables

4d+12=0

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

4d=-12

d=-12/4

d=-3

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