Answers

Subtract 20/63 from 42/27

1^st number: 1 15/27, 2^nd number: 20/63

42/27 - 20/63 is 26/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 63 is 189
   
   Next, find the equivalent fraction of both fractional numbers with denominator 189
2. For the 1st fraction, since 27 × 7 = 189,
   42/27 = 42 × 7/27 × 7 = 294/189
3. Likewise, for the 2nd fraction, since 63 × 3 = 189,
   20/63 = 20 × 3/63 × 3 = 60/189
4. Subtract the two like fractions:
   294/189 - 60/189 = 294 - 60/189 = 234/189
5. After reducing the fraction, the answer is 26/21
6. In mixed form: 15/21

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