Answers

Add 90/84 and 8/15

1^st number: 1 6/84, 2^nd number: 8/15

90/84 + 8/15 is 337/210.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 15 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   90/84 = 90 × 5/84 × 5 = 450/420
3. Likewise, for the 2nd fraction, since 15 × 28 = 420,
   8/15 = 8 × 28/15 × 28 = 224/420
4. Add the two like fractions:
   450/420 + 224/420 = 450 + 224/420 = 674/420
5. 674/420 simplified gives 337/210
6. So, 90/84 + 8/15 = 337/210
   In mixed form: 1127/210

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