3.9x+4.3=19.9

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Solution for 3.9x+4.3=19.9 equation: 



3.9x+4.3=19.9

We move all terms to the left:

3.9x+4.3-(19.9)=0

We add all the numbers together, and all the variables

3.9x-15.6=0

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

3.9x=15.6

x=15.6/3.9

x=4

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