Answers

Add 15/18 and 45/40

1^st number: 15/18, 2^nd number: 1 5/40

15/18 + 45/40 is 47/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 18 × 20 = 360,
   15/18 = 15 × 20/18 × 20 = 300/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   45/40 = 45 × 9/40 × 9 = 405/360
4. Add the two like fractions:
   300/360 + 405/360 = 300 + 405/360 = 705/360
5. 705/360 simplified gives 47/24
6. So, 15/18 + 45/40 = 47/24
   In mixed form: 123/24

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