3z+z=9

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Solution for 3z+z=9 equation: 



3z+z=9

We move all terms to the left:

3z+z-(9)=0

We add all the numbers together, and all the variables

4z-9=0

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

4z=9

z=9/4

z=2+1/4

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