7z-20=2z+5

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Solution for 7z-20=2z+5 equation: 



7z-20=2z+5

We move all terms to the left:

7z-20-(2z+5)=0

We get rid of parentheses

7z-2z-5-20=0

We add all the numbers together, and all the variables

5z-25=0

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

5z=25

z=25/5

z=5

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