Subtract 5/21 from 54/9, Solve 6 0/9

Subtract 5/21 from 54/9

1^st number: 6 0/9, 2^nd number: 5/21

54/9 - 5/21 is 121/21.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 9 × 7 = 63,
54/9 = 54 × 7/9 × 7 = 378/63
Likewise, for the 2nd fraction, since 21 × 3 = 63,
5/21 = 5 × 3/21 × 3 = 15/63
Subtract the two like fractions:
378/63 - 15/63 = 378 - 15/63 = 363/63
After reducing the fraction, the answer is 121/21
In mixed form: 516/21

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