x+0.21x=423.5

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Solution for x+0.21x=423.5 equation: 



x+0.21x=423.5

We move all terms to the left:

x+0.21x-(423.5)=0

We add all the numbers together, and all the variables

1.21x-423.5=0

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

1.21x=423.5

x=423.5/1.21

x=350

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