4.2+3x=40.8

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Solution for 4.2+3x=40.8 equation: 



4.2+3x=40.8

We move all terms to the left:

4.2+3x-(40.8)=0

We add all the numbers together, and all the variables

3x-36.6=0

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

3x=36.6

x=36.6/3

x=12+0.6/3

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