Answers

Subtract 50/63 from 81/72

1^st number: 1 9/72, 2^nd number: 50/63

81/72 - 50/63 is 167/504.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 63 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   81/72 = 81 × 7/72 × 7 = 567/504
3. Likewise, for the 2nd fraction, since 63 × 8 = 504,
   50/63 = 50 × 8/63 × 8 = 400/504
4. Subtract the two like fractions:
   567/504 - 400/504 = 567 - 400/504 = 167/504

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