O.2z-8=0.4z-7

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Solution for O.2z-8=0.4z-7 equation: 



.2O-8=0.4O-7

We move all terms to the left:

.2O-8-(0.4O-7)=0

We get rid of parentheses

.2O-0.4O+7-8=0

We add all the numbers together, and all the variables

-0.2O-1=0

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

-0.2O=1

O=1/-0.2

O=-5

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