-0.O4a+3=7

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Solution for -0.O4a+3=7 equation: 



-0.4O+3=7

We move all terms to the left:

-0.4O+3-(7)=0

We add all the numbers together, and all the variables

-0.4O-4=0

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

-0.4O=4

O=4/-0.4

O=-10

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