7z=-3z+20

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Solution for 7z=-3z+20 equation: 



7z=-3z+20

We move all terms to the left:

7z-(-3z+20)=0

We get rid of parentheses

7z+3z-20=0

We add all the numbers together, and all the variables

10z-20=0

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

10z=20

z=20/10

z=2

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