Answers

Subtract 63/40 from 63/70

1^st number: 63/70, 2^nd number: 1 23/40

63/70 - 63/40 is -27/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 70 × 4 = 280,
   63/70 = 63 × 4/70 × 4 = 252/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   63/40 = 63 × 7/40 × 7 = 441/280
4. Subtract the two like fractions:
   252/280 - 441/280 = 252 - 441/280 = -189/280
5. After reducing the fraction, the answer is -27/40

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