Answers

Add 28/30 and 90/84

1^st number: 28/30, 2^nd number: 1 6/84

28/30 + 90/84 is 421/210.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 84 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 30 × 14 = 420,
   28/30 = 28 × 14/30 × 14 = 392/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   90/84 = 90 × 5/84 × 5 = 450/420
4. Add the two like fractions:
   392/420 + 450/420 = 392 + 450/420 = 842/420
5. 842/420 simplified gives 421/210
6. So, 28/30 + 90/84 = 421/210
   In mixed form: 21/210

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