4.2x=-3(1,8x+12.8)

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Solution for 4.2x=-3(1,8x+12.8) equation: 



4.2x=-3(1.8x+12.8)

We move all terms to the left:

4.2x-(-3(1.8x+12.8))=0



We calculate terms in parentheses: -(-3(1.8x+12.8)), so:

-3(1.8x+12.8)

We multiply parentheses

-3x-38.4

Back to the equation:

-(-3x-38.4)



We get rid of parentheses

4.2x+3x+38.4=0

We add all the numbers together, and all the variables

7.2x+38.4=0

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

7.2x=-38.4

x=-38.4/7.2

x=-5+2.4/7.2

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