13d-10d-3=18

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Solution for 13d-10d-3=18 equation: 



13d-10d-3=18

We move all terms to the left:

13d-10d-3-(18)=0

We add all the numbers together, and all the variables

3d-21=0

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

3d=21

d=21/3

d=7

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