4.2x-9=3(+1.2x+4)

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Solution for 4.2x-9=3(+1.2x+4) equation: 



4.2x-9=3(+1.2x+4)

We move all terms to the left:

4.2x-9-(3(+1.2x+4))=0

We add all the numbers together, and all the variables

4.2x-(3(1.2x+4))-9=0



We calculate terms in parentheses: -(3(1.2x+4)), so:

3(1.2x+4)

We multiply parentheses

3x+12

Back to the equation:

-(3x+12)



We get rid of parentheses

4.2x-3x-12-9=0

We add all the numbers together, and all the variables

1.2x-21=0

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

1.2x=21

x=21/1.2

x=17+0.6/1.2

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