Answers

Subtract 45/5 from 81/72

1^st number: 1 9/72, 2^nd number: 9 0/5

81/72 - 45/5 is -63/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 5 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   81/72 = 81 × 5/72 × 5 = 405/360
3. Likewise, for the 2nd fraction, since 5 × 72 = 360,
   45/5 = 45 × 72/5 × 72 = 3240/360
4. Subtract the two like fractions:
   405/360 - 3240/360 = 405 - 3240/360 = -2835/360
5. After reducing the fraction, the answer is -63/8

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