Answers

Subtract 48/18 from 81/20

1^st number: 4 1/20, 2^nd number: 2 12/18

81/20 - 48/18 is 83/60.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 18 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   81/20 = 81 × 9/20 × 9 = 729/180
3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
   48/18 = 48 × 10/18 × 10 = 480/180
4. Subtract the two like fractions:
   729/180 - 480/180 = 729 - 480/180 = 249/180
5. After reducing the fraction, the answer is 83/60
6. In mixed form: 123/60

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