7z+2z+z=10

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Solution for 7z+2z+z=10 equation: 



7z+2z+z=10

We move all terms to the left:

7z+2z+z-(10)=0

We add all the numbers together, and all the variables

10z-10=0

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

10z=10

z=10/10

z=1

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