-4x-21=5(x+3)

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Solution for -4x-21=5(x+3) equation: 



-4x-21=5(x+3)

We move all terms to the left:

-4x-21-(5(x+3))=0



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

5(x+3)

We multiply parentheses

5x+15

Back to the equation:

-(5x+15)



We get rid of parentheses

-4x-5x-15-21=0

We add all the numbers together, and all the variables

-9x-36=0

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

-9x=36

x=36/-9

x=-4

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