(Z+3)(z-9)=0

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Solution for (Z+3)(z-9)=0 equation: 



(+3)(Z-9)=0

We add all the numbers together, and all the variables

3(Z-9)=0

We multiply parentheses

3Z-27=0

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

3Z=27

Z=27/3

Z=9

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