6d+9d=45

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Solution for 6d+9d=45 equation: 



6d+9d=45

We move all terms to the left:

6d+9d-(45)=0

We add all the numbers together, and all the variables

15d-45=0

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

15d=45

d=45/15

d=3

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