9(10+z)=9

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Solution for 9(10+z)=9 equation: 



9(10+z)=9

We move all terms to the left:

9(10+z)-(9)=0

We add all the numbers together, and all the variables

9(z+10)-9=0

We multiply parentheses

9z+90-9=0

We add all the numbers together, and all the variables

9z+81=0

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

9z=-81

z=-81/9

z=-9

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