15=-9+4(z+5)

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Solution for 15=-9+4(z+5) equation: 



15=-9+4(z+5)

We move all terms to the left:

15-(-9+4(z+5))=0



We calculate terms in parentheses: -(-9+4(z+5)), so:

-9+4(z+5)

determiningTheFunctionDomain
4(z+5)-9

We multiply parentheses

4z+20-9

We add all the numbers together, and all the variables

4z+11

Back to the equation:

-(4z+11)



We get rid of parentheses

-4z-11+15=0

We add all the numbers together, and all the variables

-4z+4=0

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

-4z=-4

z=-4/-4

z=1

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