O.4x-2.5=1.3x+4.7

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Solution for O.4x-2.5=1.3x+4.7 equation: 



.4O-2.5=1.3O+4.7

We move all terms to the left:

.4O-2.5-(1.3O+4.7)=0

We get rid of parentheses

.4O-1.3O-4.7-2.5=0

We add all the numbers together, and all the variables

-0.9O-7.2=0

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

-0.9O=7.2

O=7.2/-0.9

O=-8

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