Answers

Subtract 21/72 from 70/15

1^st number: 4 10/15, 2^nd number: 21/72

70/15 - 21/72 is 35/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 15 × 24 = 360,
   70/15 = 70 × 24/15 × 24 = 1680/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   21/72 = 21 × 5/72 × 5 = 105/360
4. Subtract the two like fractions:
   1680/360 - 105/360 = 1680 - 105/360 = 1575/360
5. After reducing the fraction, the answer is 35/8
6. In mixed form: 43/8

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