(12+d)/(-15)=3

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Solution for (12+d)/(-15)=3 equation: 



(12+d)/(-15)=3

We move all terms to the left:

(12+d)/(-15)-(3)=0

We add all the numbers together, and all the variables

(d+12)/(-15)-3=0

We multiply all the terms by the denominator


(d+12)-3*(-15)=0

We add all the numbers together, and all the variables

(d+12)+45=0

We get rid of parentheses

d+12+45=0

We add all the numbers together, and all the variables

d+57=0

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

d=-57

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