Answers

Subtract 72/35 from 15/28

1^st number: 15/28, 2^nd number: 2 2/35

15/28 - 72/35 is -213/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 35 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 28 × 5 = 140,
   15/28 = 15 × 5/28 × 5 = 75/140
3. Likewise, for the 2nd fraction, since 35 × 4 = 140,
   72/35 = 72 × 4/35 × 4 = 288/140
4. Subtract the two like fractions:
   75/140 - 288/140 = 75 - 288/140 = -213/140

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