Answers

Subtract 48/36 from 42/20

1^st number: 2 2/20, 2^nd number: 1 12/36

42/20 - 48/36 is 23/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 36 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   42/20 = 42 × 9/20 × 9 = 378/180
3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
   48/36 = 48 × 5/36 × 5 = 240/180
4. Subtract the two like fractions:
   378/180 - 240/180 = 378 - 240/180 = 138/180
5. After reducing the fraction, the answer is 23/30

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