Answers

Subtract 21/20 from 56/9

1^st number: 6 2/9, 2^nd number: 1 1/20

56/9 - 21/20 is 931/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 9 × 20 = 180,
   56/9 = 56 × 20/9 × 20 = 1120/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   21/20 = 21 × 9/20 × 9 = 189/180
4. Subtract the two like fractions:
   1120/180 - 189/180 = 1120 - 189/180 = 931/180
5. In mixed form: 531/180

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