O.5x+2x=90

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Solution for O.5x+2x=90 equation: 



.5O+2O=90

We move all terms to the left:

.5O+2O-(90)=0

We add all the numbers together, and all the variables

2.5O-90=0

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

2.5O=90

O=90/2.5

O=36

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