O.4(5x-15)=2.5(x+3)

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Solution for O.4(5x-15)=2.5(x+3) equation: 



.4(5O-15)=2.5(O+3)

We move all terms to the left:

.4(5O-15)-(2.5(O+3))=0

We multiply parentheses

2O-(2.5(O+3))-6=0



We calculate terms in parentheses: -(2.5(O+3)), so:

2.5(O+3)

We multiply parentheses

2.5O+7.5

Back to the equation:

-(2.5O+7.5)



We get rid of parentheses

2O-2.5O-7.5-6=0

We add all the numbers together, and all the variables

-0.5O-13.5=0

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

-0.5O=13.5

O=13.5/-0.5

O=-27

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