21+7z=441

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Solution for 21+7z=441 equation: 



21+7z=441

We move all terms to the left:

21+7z-(441)=0

We add all the numbers together, and all the variables

7z-420=0

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

7z=420

z=420/7

z=60

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