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Q: What can 21 3 7 and 9 go into?

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3 = 9/3 = 21/73 = 9/3 = 21/7

Both 21 and 9 can be divided by 3. 21/3=7 9/3=3 So 21 over 9 can be simplified to 7 over 3.

7/3, 21 /3 = 7 9 /3 = 3

3*3 = 9 3*7 = 21

They are: 3*3 = 9 and 3*7 = 21

1, 3, 7, 9, 21, 63.

1, 3, 7, 9, 21, 63.

1, 3, 7, 9, 21 and 63.

1, 3, 7, 9, 21, 63.

3/7=9/21 1/3=7/21 9+7=16/21

The factors of 9 are: 1, 3, 9 The factors of 21 are: 1, 3, 7, 21 The factors of 63 are: 1, 3, 7, 9, 21, 63

3/7 = 9/21 (multiplying both the numerator and denominator by 3), therefore 3 over 7 is equal to 9 over 21.

1, 3, 9 1, 3, 7, 21

9/21 = 3/7

The factors of 9 are: 1, 3, 9 The factors of 21 are: 1, 3, 7, 21

9 = 3/7 x 21/1 = 63/7

The factors of 63 are 1, 3, 7, 9, 21 and 63.The prime factors are 3 and 7.1, 3, 7, 9, 21, 631, 3, 7, 9, 21, 63

7 over 9. 21 / 3 = 7 and 27/3= 9

1, 3, 7, 9, 21, 63

1, 3, 7, 9, 21, 63.

1, 3, 7, 9, 21, 27, 63, 189.

21 = 7 x 3 , 9 = 3 x 3 ; for the Least Common Multiple (LCM), 21 already is a multiple of 7. 21 & 9 have a common factor of 3, so LCM = 21 x 3 = 63

9/21 = 3/7 = 0.42857 in decimal

9/21 = 3/7 = .4286

assuming question is 21/27 then 21/7 = 3 = 27/9 Answer: 7/9