.3x+9-0.15x=12

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Solution for .3x+9-0.15x=12 equation: 



.3x+9-0.15x=12

We move all terms to the left:

.3x+9-0.15x-(12)=0

We add all the numbers together, and all the variables

0.15x-3=0

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

0.15x=3

x=3/0.15

x=20

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