2d+9=15

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Solution for 2d+9=15 equation: 



2d+9=15

We move all terms to the left:

2d+9-(15)=0

We add all the numbers together, and all the variables

2d-6=0

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

2d=6

d=6/2

d=3

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