13.x-9=30

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Solution for 13.x-9=30 equation: 



13.x-9=30

We move all terms to the left:

13.x-9-(30)=0

We add all the numbers together, and all the variables

13.x-39=0

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

13.x=39

x=39/13.

x=3

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