3z+4z-7z+2z-z=20

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Solution for 3z+4z-7z+2z-z=20 equation: 



3z+4z-7z+2z-z=20

We move all terms to the left:

3z+4z-7z+2z-z-(20)=0

We add all the numbers together, and all the variables

z-20=0

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

z=20

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