-9=-4+z

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Solution for -9=-4+z equation: 



-9=-4+z

We move all terms to the left:

-9-(-4+z)=0

We add all the numbers together, and all the variables

-(z-4)-9=0

We get rid of parentheses

-z+4-9=0

We add all the numbers together, and all the variables

-1z-5=0

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

-z=5

z=5/-1

z=-5

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