7z-16z+4z=-20

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Solution for 7z-16z+4z=-20 equation: 



7z-16z+4z=-20

We move all terms to the left:

7z-16z+4z-(-20)=0

We add all the numbers together, and all the variables

-5z+20=0

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

-5z=-20

z=-20/-5

z=+4

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