7x-9=4x+20

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Solution for 7x-9=4x+20 equation: 



7x-9=4x+20

We move all terms to the left:

7x-9-(4x+20)=0

We get rid of parentheses

7x-4x-20-9=0

We add all the numbers together, and all the variables

3x-29=0

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

3x=29

x=29/3

x=9+2/3

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