Answers

Subtract 80/63 from 7/40

1^st number: 7/40, 2^nd number: 1 17/63

7/40 - 80/63 is -2759/2520.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 63 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 40 × 63 = 2520,
   7/40 = 7 × 63/40 × 63 = 441/2520
3. Likewise, for the 2nd fraction, since 63 × 40 = 2520,
   80/63 = 80 × 40/63 × 40 = 3200/2520
4. Subtract the two like fractions:
   441/2520 - 3200/2520 = 441 - 3200/2520 = -2759/2520

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