11z-9=z-9

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Solution for 11z-9=z-9 equation: 



11z-9=z-9

We move all terms to the left:

11z-9-(z-9)=0

We get rid of parentheses

11z-z+9-9=0

We add all the numbers together, and all the variables

10z=0

z=0/10

z=0

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