9=18+0.3x

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Solution for 9=18+0.3x equation: 



9=18+0.3x

We move all terms to the left:

9-(18+0.3x)=0

We add all the numbers together, and all the variables

-(0.3x+18)+9=0

We get rid of parentheses

-0.3x-18+9=0

We add all the numbers together, and all the variables

-0.3x-9=0

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

-0.3x=9

x=9/-0.3

x=-30

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