7z+13=4z-20

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Solution for 7z+13=4z-20 equation: 



7z+13=4z-20

We move all terms to the left:

7z+13-(4z-20)=0

We get rid of parentheses

7z-4z+20+13=0

We add all the numbers together, and all the variables

3z+33=0

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

3z=-33

z=-33/3

z=-11

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