7-3D=-5+9d

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Solution for 7-3D=-5+9d equation: 



7-3=-5+9D

We move all terms to the left:

7-3-(-5+9D)=0

We add all the numbers together, and all the variables

-(9D-5)+7-3=0

We add all the numbers together, and all the variables

-(9D-5)+4=0

We get rid of parentheses

-9D+5+4=0

We add all the numbers together, and all the variables

-9D+9=0

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

-9D=-9

D=-9/-9

D=1

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