-7+(-5)=z

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Solution for -7+(-5)=z equation: 



-7+(-5)=z

We move all terms to the left:

-7+(-5)-(z)=0

We add all the numbers together, and all the variables

-1z-12=0

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

-z=12

z=12/-1

z=-12

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