Answers

Subtract 63/40 from 45/63

1^st number: 45/63, 2^nd number: 1 23/40

45/63 - 63/40 is -241/280.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 40 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 63 × 40 = 2520,
   45/63 = 45 × 40/63 × 40 = 1800/2520
3. Likewise, for the 2nd fraction, since 40 × 63 = 2520,
   63/40 = 63 × 63/40 × 63 = 3969/2520
4. Subtract the two like fractions:
   1800/2520 - 3969/2520 = 1800 - 3969/2520 = -2169/2520
5. After reducing the fraction, the answer is -241/280

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