7z+4-4z=25-4z

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Solution for 7z+4-4z=25-4z equation: 



7z+4-4z=25-4z

We move all terms to the left:

7z+4-4z-(25-4z)=0

We add all the numbers together, and all the variables

7z-4z-(-4z+25)+4=0

We add all the numbers together, and all the variables

3z-(-4z+25)+4=0

We get rid of parentheses

3z+4z-25+4=0

We add all the numbers together, and all the variables

7z-21=0

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

7z=21

z=21/7

z=3

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