Answers

Add 80/28 and 42/90

1^st number: 2 24/28, 2^nd number: 42/90

80/28 + 42/90 is 349/105.

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,
   42/90 = 42 × 14/90 × 14 = 588/1260
4. Add the two like fractions:
   3600/1260 + 588/1260 = 3600 + 588/1260 = 4188/1260
5. 4188/1260 simplified gives 349/105
6. So, 80/28 + 42/90 = 349/105
   In mixed form: 334/105

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