Answers

Add 40/24 and 21/90

1^st number: 1 16/24, 2^nd number: 21/90

40/24 + 21/90 is 19/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 90 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 24 × 15 = 360,
   40/24 = 40 × 15/24 × 15 = 600/360
3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
   21/90 = 21 × 4/90 × 4 = 84/360
4. Add the two like fractions:
   600/360 + 84/360 = 600 + 84/360 = 684/360
5. 684/360 simplified gives 19/10
6. So, 40/24 + 21/90 = 19/10
   In mixed form: 19/10

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