-4=z+9

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Solution for -4=z+9 equation: 



-4=z+9

We move all terms to the left:

-4-(z+9)=0

We get rid of parentheses

-z-9-4=0

We add all the numbers together, and all the variables

-1z-13=0

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

-z=13

z=13/-1

z=-13

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