x+1.2x=21

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Solution for x+1.2x=21 equation: 



x+1.2x=21

We move all terms to the left:

x+1.2x-(21)=0

We add all the numbers together, and all the variables

2.2x-21=0

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

2.2x=21

x=21/2.2

x=9+1/1.8333333333333

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