O=140+2x

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Solution for O=140+2x equation: 



=140+2O

We move all terms to the left:

-(140+2O)=0

We add all the numbers together, and all the variables

-(2O+140)=0

We get rid of parentheses

-2O-140=0

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

-2O=140

O=140/-2

O=-70

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