3-7d=18

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Solution for 3-7d=18 equation: 



3-7d=18

We move all terms to the left:

3-7d-(18)=0

We add all the numbers together, and all the variables

-7d-15=0

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

-7d=15

d=15/-7

d=-2+1/7

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