9+7x=4x+39

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Solution for 9+7x=4x+39 equation: 



9+7x=4x+39

We move all terms to the left:

9+7x-(4x+39)=0

We get rid of parentheses

7x-4x-39+9=0

We add all the numbers together, and all the variables

3x-30=0

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

3x=30

x=30/3

x=10

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