7=22-3d

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Solution for 7=22-3d equation: 



7=22-3d

We move all terms to the left:

7-(22-3d)=0

We add all the numbers together, and all the variables

-(-3d+22)+7=0

We get rid of parentheses

3d-22+7=0

We add all the numbers together, and all the variables

3d-15=0

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

3d=15

d=15/3

d=5

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