-21=3(5x-2)

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Solution for -21=3(5x-2) equation: 



-21=3(5x-2)

We move all terms to the left:

-21-(3(5x-2))=0



We calculate terms in parentheses: -(3(5x-2)), so:

3(5x-2)

We multiply parentheses

15x-6

Back to the equation:

-(15x-6)



We get rid of parentheses

-15x+6-21=0

We add all the numbers together, and all the variables

-15x-15=0

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

-15x=15

x=15/-15

x=-1

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