Answers

Subtract 72/63 from 84/4

1^st number: 21 0/4, 2^nd number: 1 9/63

84/4 - 72/63 is 139/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 4 × 63 = 252,
   84/4 = 84 × 63/4 × 63 = 5292/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   72/63 = 72 × 4/63 × 4 = 288/252
4. Subtract the two like fractions:
   5292/252 - 288/252 = 5292 - 288/252 = 5004/252
5. After reducing the fraction, the answer is 139/7
6. In mixed form: 196/7

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