3(7+2d)=+d

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Solution for 3(7+2d)=+d equation: 



3(7+2d)=+d

We move all terms to the left:

3(7+2d)-(+d)=0

We add all the numbers together, and all the variables

3(2d+7)-(+d)=0

We multiply parentheses

6d-(+d)+21=0

We get rid of parentheses

6d-d+21=0

We add all the numbers together, and all the variables

5d+21=0

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

5d=-21

d=-21/5

d=-4+1/5

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