Answers

Add 15/30 and 63/40

1^st number: 15/30, 2^nd number: 1 23/40

15/30 + 63/40 is 83/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 40 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 30 × 4 = 120,
   15/30 = 15 × 4/30 × 4 = 60/120
3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
   63/40 = 63 × 3/40 × 3 = 189/120
4. Add the two like fractions:
   60/120 + 189/120 = 60 + 189/120 = 249/120
5. 249/120 simplified gives 83/40
6. So, 15/30 + 63/40 = 83/40
   In mixed form: 23/40

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