Answers

Subtract 63/20 from 7/8

1^st number: 7/8, 2^nd number: 3 3/20

7/8 - 63/20 is -91/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 20 is 40
   
   Next, find the equivalent fraction of both fractional numbers with denominator 40
2. For the 1st fraction, since 8 × 5 = 40,
   7/8 = 7 × 5/8 × 5 = 35/40
3. Likewise, for the 2nd fraction, since 20 × 2 = 40,
   63/20 = 63 × 2/20 × 2 = 126/40
4. Subtract the two like fractions:
   35/40 - 126/40 = 35 - 126/40 = -91/40

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