-20=6+4(z-9)

Solution for -20=6+4(z-9) equation:

-20=6+4(z-9)

We move all terms to the left:

-20-(6+4(z-9))=0


We calculate terms in parentheses: -(6+4(z-9)), so:

6+4(z-9)

determiningTheFunctionDomain
4(z-9)+6

We multiply parentheses

4z-36+6

We add all the numbers together, and all the variables

4z-30

Back to the equation:

-(4z-30)


We get rid of parentheses

-4z+30-20=0

We add all the numbers together, and all the variables

-4z+10=0

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

-4z=-10

z=-10/-4

z=2+1/2