-21=-5(3x-9)

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Solution for -21=-5(3x-9) equation: 



-21=-5(3x-9)

We move all terms to the left:

-21-(-5(3x-9))=0



We calculate terms in parentheses: -(-5(3x-9)), so:

-5(3x-9)

We multiply parentheses

-15x+45

Back to the equation:

-(-15x+45)



We get rid of parentheses

15x-45-21=0

We add all the numbers together, and all the variables

15x-66=0

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

15x=66

x=66/15

x=4+2/5

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