Answers

Add 80/15 and 45/28

1^st number: 5 5/15, 2^nd number: 1 17/28

80/15 + 45/28 is 583/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 28 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 15 × 28 = 420,
   80/15 = 80 × 28/15 × 28 = 2240/420
3. Likewise, for the 2nd fraction, since 28 × 15 = 420,
   45/28 = 45 × 15/28 × 15 = 675/420
4. Add the two like fractions:
   2240/420 + 675/420 = 2240 + 675/420 = 2915/420
5. 2915/420 simplified gives 583/84
6. So, 80/15 + 45/28 = 583/84
   In mixed form: 679/84

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