You can set up a proportion that looks like 3/7 = x/21. X being the number that you are trying to find. Seven goes into 21 three times. So multiply 3 also by that 3 to get 9. So three sevenths of twenty-one is 9.
Answer:
About 14 in the exact value is 14.38 smthn
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Answer: m = 0
Step-by-step explanation: