Answers

Subtract 70/63 from 45/40

1^st number: 1 5/40, 2^nd number: 1 7/63

45/40 - 70/63 is 1/72.

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,
   45/40 = 45 × 63/40 × 63 = 2835/2520
3. Likewise, for the 2nd fraction, since 63 × 40 = 2520,
   70/63 = 70 × 40/63 × 40 = 2800/2520
4. Subtract the two like fractions:
   2835/2520 - 2800/2520 = 2835 - 2800/2520 = 35/2520
5. After reducing the fraction, the answer is 1/72

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