Answers

Subtract 18/63 from 72/42

1^st number: 1 30/42, 2^nd number: 18/63

72/42 - 18/63 is 10/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 63 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 42 × 3 = 126,
   72/42 = 72 × 3/42 × 3 = 216/126
3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
   18/63 = 18 × 2/63 × 2 = 36/126
4. Subtract the two like fractions:
   216/126 - 36/126 = 216 - 36/126 = 180/126
5. After reducing the fraction, the answer is 10/7
6. In mixed form: 13/7

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