O.4x-1.2=0.15x+0.8

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Solution for O.4x-1.2=0.15x+0.8 equation: 



.4O-1.2=0.15O+0.8

We move all terms to the left:

.4O-1.2-(0.15O+0.8)=0

We get rid of parentheses

.4O-0.15O-0.8-1.2=0

We add all the numbers together, and all the variables

0.25O-2=0

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

0.25O=2

O=2/0.25

O=8

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