30x+9=17x+399

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Solution for 30x+9=17x+399 equation: 



30x+9=17x+399

We move all terms to the left:

30x+9-(17x+399)=0

We get rid of parentheses

30x-17x-399+9=0

We add all the numbers together, and all the variables

13x-390=0

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

13x=390

x=390/13

x=30

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