X+.5x=20

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Solution for X+.5x=20 equation: 



X+.5X=20

We move all terms to the left:

X+.5X-(20)=0

We add all the numbers together, and all the variables

1.5X-20=0

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

1.5X=20

X=20/1.5

X=13+0.5/1.5

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