Answers

Subtract 50/63 from 81/18

1^st number: 4 9/18, 2^nd number: 50/63

81/18 - 50/63 is 467/126.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 63 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   81/18 = 81 × 7/18 × 7 = 567/126
3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
   50/63 = 50 × 2/63 × 2 = 100/126
4. Subtract the two like fractions:
   567/126 - 100/126 = 567 - 100/126 = 467/126
5. In mixed form: 389/126

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