4x+13=-9+-3(x+9)

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Solution for 4x+13=-9+-3(x+9) equation: 



4x+13=-9+-3(x+9)

We move all terms to the left:

4x+13-(-9+-3(x+9))=0

We use the square of the difference formula

4x-(-9-3(x+9))+13=0



We calculate terms in parentheses: -(-9-3(x+9)), so:

-9-3(x+9)

determiningTheFunctionDomain
-3(x+9)-9

We multiply parentheses

-3x-27-9

We add all the numbers together, and all the variables

-3x-36

Back to the equation:

-(-3x-36)



We get rid of parentheses

4x+3x+36+13=0

We add all the numbers together, and all the variables

7x+49=0

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

7x=-49

x=-49/7

x=-7

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