4z+13=7z-8

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Solution for 4z+13=7z-8 equation: 



4z+13=7z-8

We move all terms to the left:

4z+13-(7z-8)=0

We get rid of parentheses

4z-7z+8+13=0

We add all the numbers together, and all the variables

-3z+21=0

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

-3z=-21

z=-21/-3

z=+7

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