Answers

Add 24/12 and 21/90

1^st number: 2 0/12, 2^nd number: 21/90

24/12 + 21/90 is 67/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 12 × 15 = 180,
   24/12 = 24 × 15/12 × 15 = 360/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   21/90 = 21 × 2/90 × 2 = 42/180
4. Add the two like fractions:
   360/180 + 42/180 = 360 + 42/180 = 402/180
5. 402/180 simplified gives 67/30
6. So, 24/12 + 21/90 = 67/30
   In mixed form: 27/30

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