7+7d=9d+3

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Solution for 7+7d=9d+3 equation: 



7+7d=9d+3

We move all terms to the left:

7+7d-(9d+3)=0

We get rid of parentheses

7d-9d-3+7=0

We add all the numbers together, and all the variables

-2d+4=0

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

-2d=-4

d=-4/-2

d=+2

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