7+3D=-1+2d-12+d

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Solution for 7+3D=-1+2d-12+d equation: 



7+3=-1+2D-12+D

We move all terms to the left:

7+3-(-1+2D-12+D)=0

We add all the numbers together, and all the variables

-(3D-13)+7+3=0

We add all the numbers together, and all the variables

-(3D-13)+10=0

We get rid of parentheses

-3D+13+10=0

We add all the numbers together, and all the variables

-3D+23=0

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

-3D=-23

D=-23/-3

D=7+2/3

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