-21=-6+3(w-4)

Solution for -21=-6+3(w-4) equation:

-21=-6+3(w-4)

We move all terms to the left:

-21-(-6+3(w-4))=0


We calculate terms in parentheses: -(-6+3(w-4)), so:

-6+3(w-4)

determiningTheFunctionDomain
3(w-4)-6

We multiply parentheses

3w-12-6

We add all the numbers together, and all the variables

3w-18

Back to the equation:

-(3w-18)


We get rid of parentheses

-3w+18-21=0

We add all the numbers together, and all the variables

-3w-3=0

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

-3w=3

w=3/-3

w=-1