-20=7-9(6+w)

Solution for -20=7-9(6+w) equation:

-20=7-9(6+w)

We move all terms to the left:

-20-(7-9(6+w))=0

We add all the numbers together, and all the variables

-(7-9(w+6))-20=0


We calculate terms in parentheses: -(7-9(w+6)), so:

7-9(w+6)

determiningTheFunctionDomain
-9(w+6)+7

We multiply parentheses

-9w-54+7

We add all the numbers together, and all the variables

-9w-47

Back to the equation:

-(-9w-47)


We get rid of parentheses

9w+47-20=0

We add all the numbers together, and all the variables

9w+27=0

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

9w=-27

w=-27/9

w=-3