Answers

Subtract 20/9 from 10/72

1^st number: 10/72, 2^nd number: 2 2/9

10/72 - 20/9 is -25/12.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 9 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 72 × 1 = 72,
   10/72 = 10 × 1/72 × 1 = 10/72
3. Likewise, for the 2nd fraction, since 9 × 8 = 72,
   20/9 = 20 × 8/9 × 8 = 160/72
4. Subtract the two like fractions:
   10/72 - 160/72 = 10 - 160/72 = -150/72
5. After reducing the fraction, the answer is -25/12

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