4.2+3(4x+3)=-3-(3x+1.2)

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Solution for 4.2+3(4x+3)=-3-(3x+1.2) equation: 



4.2+3(4x+3)=-3-(3x+1.2)

We move all terms to the left:

4.2+3(4x+3)-(-3-(3x+1.2))=0

We multiply parentheses

12x-(-3-(3x+1.2))+9+4.2=0



We calculate terms in parentheses: -(-3-(3x+1.2)), so:

-3-(3x+1.2)

determiningTheFunctionDomain
-(3x+1.2)-3

We get rid of parentheses

-3x-1.2-3

We add all the numbers together, and all the variables

-3x-4.2

Back to the equation:

-(-3x-4.2)



We add all the numbers together, and all the variables

12x-(-3x-4.2)+13.2=0

We get rid of parentheses

12x+3x+4.2+13.2=0

We add all the numbers together, and all the variables

15x+17.4=0

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

15x=-17.4

x=-17.4/15

x=-1+2.4/15

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