Answers

Subtract 63/35 from 81/4

1^st number: 20 1/4, 2^nd number: 1 28/35

81/4 - 63/35 is 369/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 35 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 4 × 35 = 140,
   81/4 = 81 × 35/4 × 35 = 2835/140
3. Likewise, for the 2nd fraction, since 35 × 4 = 140,
   63/35 = 63 × 4/35 × 4 = 252/140
4. Subtract the two like fractions:
   2835/140 - 252/140 = 2835 - 252/140 = 2583/140
5. After reducing the fraction, the answer is 369/20
6. In mixed form: 189/20

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