7x+9=-7x+9

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



7x+9=-7x+9

We move all terms to the left:

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

We get rid of parentheses

7x+7x-9+9=0

We add all the numbers together, and all the variables

14x=0

x=0/14

x=0

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