O.75(6+d)=12

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Solution for O.75(6+d)=12 equation: 



.75(6+O)=12

We move all terms to the left:

.75(6+O)-(12)=0

We add all the numbers together, and all the variables

.75(O+6)-12=0

We multiply parentheses

0.75O+4.5-12=0

We add all the numbers together, and all the variables

0.75O-7.5=0

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

0.75O=7.5

O=7.5/0.75

O=10

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