Answers

Add 90/40 and 15/63

1^st number: 2 10/40, 2^nd number: 15/63

90/40 + 15/63 is 209/84.

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,
   90/40 = 90 × 63/40 × 63 = 5670/2520
3. Likewise, for the 2nd fraction, since 63 × 40 = 2520,
   15/63 = 15 × 40/63 × 40 = 600/2520
4. Add the two like fractions:
   5670/2520 + 600/2520 = 5670 + 600/2520 = 6270/2520
5. 6270/2520 simplified gives 209/84
6. So, 90/40 + 15/63 = 209/84
   In mixed form: 241/84

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