7z+3z=9z+4

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Solution for 7z+3z=9z+4 equation: 



7z+3z=9z+4

We move all terms to the left:

7z+3z-(9z+4)=0

We add all the numbers together, and all the variables

10z-(9z+4)=0

We get rid of parentheses

10z-9z-4=0

We add all the numbers together, and all the variables

z-4=0

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

z=4

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