12d+7=16+9(d-1)+3d

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Solution for 12d+7=16+9(d-1)+3d equation: 



12d+7=16+9(d-1)+3d

We move all terms to the left:

12d+7-(16+9(d-1)+3d)=0



We calculate terms in parentheses: -(16+9(d-1)+3d), so:

16+9(d-1)+3d

determiningTheFunctionDomain
9(d-1)+3d+16

We add all the numbers together, and all the variables

3d+9(d-1)+16

We multiply parentheses

3d+9d-9+16

We add all the numbers together, and all the variables

12d+7

Back to the equation:

-(12d+7)



We get rid of parentheses

12d-12d-7+7=0

We add all the numbers together, and all the variables

=0

d=0/1

d=0

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