7y+9=7y-4

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Solution for 7y+9=7y-4 equation: 



7y+9=7y-4

We move all terms to the left:

7y+9-(7y-4)=0

We get rid of parentheses

7y-7y+4+9=0

We add all the numbers together, and all the variables

13!=0

There is no solution for this equation

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