7z+1=-20

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Solution for 7z+1=-20 equation: 



7z+1=-20

We move all terms to the left:

7z+1-(-20)=0

We add all the numbers together, and all the variables

7z+21=0

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

7z=-21

z=-21/7

z=-3

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