Answers

Subtract 72/18 from 15/10

1^st number: 1 5/10, 2^nd number: 4 0/18

15/10 - 72/18 is -5/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 18 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 10 × 9 = 90,
   15/10 = 15 × 9/10 × 9 = 135/90
3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
   72/18 = 72 × 5/18 × 5 = 360/90
4. Subtract the two like fractions:
   135/90 - 360/90 = 135 - 360/90 = -225/90
5. After reducing the fraction, the answer is -5/2

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