-7z-20-20=-10z+20

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Solution for -7z-20-20=-10z+20 equation: 



-7z-20-20=-10z+20

We move all terms to the left:

-7z-20-20-(-10z+20)=0

We add all the numbers together, and all the variables

-7z-(-10z+20)-40=0

We get rid of parentheses

-7z+10z-20-40=0

We add all the numbers together, and all the variables

3z-60=0

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

3z=60

z=60/3

z=20

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