-21x-9=-3(6x-5)

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Solution for -21x-9=-3(6x-5) equation: 



-21x-9=-3(6x-5)

We move all terms to the left:

-21x-9-(-3(6x-5))=0



We calculate terms in parentheses: -(-3(6x-5)), so:

-3(6x-5)

We multiply parentheses

-18x+15

Back to the equation:

-(-18x+15)



We get rid of parentheses

-21x+18x-15-9=0

We add all the numbers together, and all the variables

-3x-24=0

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

-3x=24

x=24/-3

x=-8

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