3D=-7+2d

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Solution for 3D=-7+2d equation: 



3=-7+2D

We move all terms to the left:

3-(-7+2D)=0

We add all the numbers together, and all the variables

-(2D-7)+3=0

We get rid of parentheses

-2D+7+3=0

We add all the numbers together, and all the variables

-2D+10=0

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

-2D=-10

D=-10/-2

D=+5

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