O.2y+0.9=0.1-0.2y

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Solution for O.2y+0.9=0.1-0.2y equation: 



.2O+0.9=0.1-0.2O

We move all terms to the left:

.2O+0.9-(0.1-0.2O)=0

We add all the numbers together, and all the variables

.2O-(-0.2O+0.1)+0.9=0

We get rid of parentheses

.2O+0.2O-0.1+0.9=0

We add all the numbers together, and all the variables

0.4O+0.8=0

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

0.4O=-0.8

O=-0.8/0.4

O=-2

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