Answers

Subtract 42/63 from 81/10

1^st number: 8 1/10, 2^nd number: 42/63

81/10 - 42/63 is 223/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 10 × 63 = 630,
   81/10 = 81 × 63/10 × 63 = 5103/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   42/63 = 42 × 10/63 × 10 = 420/630
4. Subtract the two like fractions:
   5103/630 - 420/630 = 5103 - 420/630 = 4683/630
5. After reducing the fraction, the answer is 223/30
6. In mixed form: 713/30

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