Answers

Add 80/28 and 30/90

1^st number: 2 24/28, 2^nd number: 30/90

80/28 + 30/90 is 67/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 90 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 28 × 45 = 1260,
   80/28 = 80 × 45/28 × 45 = 3600/1260
3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
   30/90 = 30 × 14/90 × 14 = 420/1260
4. Add the two like fractions:
   3600/1260 + 420/1260 = 3600 + 420/1260 = 4020/1260
5. 4020/1260 simplified gives 67/21
6. So, 80/28 + 30/90 = 67/21
   In mixed form: 34/21

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