-21=4+2(d+5)

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Solution for -21=4+2(d+5) equation: 



-21=4+2(d+5)

We move all terms to the left:

-21-(4+2(d+5))=0



We calculate terms in parentheses: -(4+2(d+5)), so:

4+2(d+5)

determiningTheFunctionDomain
2(d+5)+4

We multiply parentheses

2d+10+4

We add all the numbers together, and all the variables

2d+14

Back to the equation:

-(2d+14)



We get rid of parentheses

-2d-14-21=0

We add all the numbers together, and all the variables

-2d-35=0

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

-2d=35

d=35/-2

d=-17+1/2

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