4x+9=-3(x+4)

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Solution for 4x+9=-3(x+4) equation: 



4x+9=-3(x+4)

We move all terms to the left:

4x+9-(-3(x+4))=0



We calculate terms in parentheses: -(-3(x+4)), so:

-3(x+4)

We multiply parentheses

-3x-12

Back to the equation:

-(-3x-12)



We get rid of parentheses

4x+3x+12+9=0

We add all the numbers together, and all the variables

7x+21=0

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

7x=-21

x=-21/7

x=-3

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