O.5(x-3)=20

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Solution for O.5(x-3)=20 equation: 



.5(O-3)=20

We move all terms to the left:

.5(O-3)-(20)=0

We multiply parentheses

0.5O-1.5-20=0

We add all the numbers together, and all the variables

0.5O-21.5=0

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

0.5O=21.5

O=21.5/0.5

O=43

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