Answers

Subtract 72/35 from 75/20

1^st number: 3 15/20, 2^nd number: 2 2/35

75/20 - 72/35 is 237/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 35 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   75/20 = 75 × 7/20 × 7 = 525/140
3. Likewise, for the 2nd fraction, since 35 × 4 = 140,
   72/35 = 72 × 4/35 × 4 = 288/140
4. Subtract the two like fractions:
   525/140 - 288/140 = 525 - 288/140 = 237/140
5. In mixed form: 197/140

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