Answers

Subtract 42/63 from 72/30

1^st number: 2 12/30, 2^nd number: 42/63

72/30 - 42/63 is 26/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 30 × 21 = 630,
   72/30 = 72 × 21/30 × 21 = 1512/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   42/63 = 42 × 10/63 × 10 = 420/630
4. Subtract the two like fractions:
   1512/630 - 420/630 = 1512 - 420/630 = 1092/630
5. After reducing the fraction, the answer is 26/15
6. In mixed form: 111/15

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