Answers

Subtract 70/15 from 28/72

1^st number: 28/72, 2^nd number: 4 10/15

28/72 - 70/15 is -77/18.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 15 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   28/72 = 28 × 5/72 × 5 = 140/360
3. Likewise, for the 2nd fraction, since 15 × 24 = 360,
   70/15 = 70 × 24/15 × 24 = 1680/360
4. Subtract the two like fractions:
   140/360 - 1680/360 = 140 - 1680/360 = -1540/360
5. After reducing the fraction, the answer is -77/18

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