8d+12=30d-54

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Solution for 8d+12=30d-54 equation: 



8d+12=30d-54

We move all terms to the left:

8d+12-(30d-54)=0

We get rid of parentheses

8d-30d+54+12=0

We add all the numbers together, and all the variables

-22d+66=0

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

-22d=-66

d=-66/-22

d=+3

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