-9z-(-4z)-(-z)-9z-(-16z)=12

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Solution for -9z-(-4z)-(-z)-9z-(-16z)=12 equation: 



-9z-(-4z)-(-z)-9z-(-16z)=12

We move all terms to the left:

-9z-(-4z)-(-z)-9z-(-16z)-(12)=0

We add all the numbers together, and all the variables

-9z-(-4z)-(-1z)-9z-(-16z)-12=0

We add all the numbers together, and all the variables

-18z-(-4z)-(-1z)-(-16z)-12=0

We get rid of parentheses

-18z+4z+1z+16z-12=0

We add all the numbers together, and all the variables

3z-12=0

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

3z=12

z=12/3

z=4

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