9/21 = 3/7 = .4286
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Yes and it is 7/9 simplified
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.
21 over 72, or 7 over 24 (simplified)
32 over 21 (32/21) cannot be further simplified.
9/9 simplified is 1