-21x+9=3(-11-5x)

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Solution for -21x+9=3(-11-5x) equation: 



-21x+9=3(-11-5x)

We move all terms to the left:

-21x+9-(3(-11-5x))=0

We add all the numbers together, and all the variables

-21x-(3(-5x-11))+9=0



We calculate terms in parentheses: -(3(-5x-11)), so:

3(-5x-11)

We multiply parentheses

-15x-33

Back to the equation:

-(-15x-33)



We get rid of parentheses

-21x+15x+33+9=0

We add all the numbers together, and all the variables

-6x+42=0

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

-6x=-42

x=-42/-6

x=+7

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