-10(9+z)=30

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Solution for -10(9+z)=30 equation: 



-10(9+z)=30

We move all terms to the left:

-10(9+z)-(30)=0

We add all the numbers together, and all the variables

-10(z+9)-30=0

We multiply parentheses

-10z-90-30=0

We add all the numbers together, and all the variables

-10z-120=0

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

-10z=120

z=120/-10

z=-12

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