Answers

Subtract 21/30 from 20/9

1^st number: 2 2/9, 2^nd number: 21/30

20/9 - 21/30 is 137/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 30 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 9 × 10 = 90,
   20/9 = 20 × 10/9 × 10 = 200/90
3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
   21/30 = 21 × 3/30 × 3 = 63/90
4. Subtract the two like fractions:
   200/90 - 63/90 = 200 - 63/90 = 137/90
5. In mixed form: 147/90

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