Answers

Add 90/28 and 50/15

1^st number: 3 6/28, 2^nd number: 3 5/15

90/28 + 50/15 is 275/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 15 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 28 × 15 = 420,
   90/28 = 90 × 15/28 × 15 = 1350/420
3. Likewise, for the 2nd fraction, since 15 × 28 = 420,
   50/15 = 50 × 28/15 × 28 = 1400/420
4. Add the two like fractions:
   1350/420 + 1400/420 = 1350 + 1400/420 = 2750/420
5. 2750/420 simplified gives 275/42
6. So, 90/28 + 50/15 = 275/42
   In mixed form: 623/42

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