Answers

Add 45/40 and 28/63

1^st number: 1 5/40, 2^nd number: 28/63

45/40 + 28/63 is 113/72.

Steps for adding 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,
   28/63 = 28 × 40/63 × 40 = 1120/2520
4. Add the two like fractions:
   2835/2520 + 1120/2520 = 2835 + 1120/2520 = 3955/2520
5. 3955/2520 simplified gives 113/72
6. So, 45/40 + 28/63 = 113/72
   In mixed form: 141/72

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