Answers

Subtract 45/72 from 28/10

1^st number: 2 8/10, 2^nd number: 45/72

28/10 - 45/72 is 87/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 10 × 36 = 360,
   28/10 = 28 × 36/10 × 36 = 1008/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   45/72 = 45 × 5/72 × 5 = 225/360
4. Subtract the two like fractions:
   1008/360 - 225/360 = 1008 - 225/360 = 783/360
5. After reducing the fraction, the answer is 87/40
6. In mixed form: 27/40

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