Answers

Add 21/15 and 42/98

1^st number: 1 6/15, 2^nd number: 42/98

21/15 + 42/98 is 64/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 98 is 1470
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1470
2. For the 1st fraction, since 15 × 98 = 1470,
   21/15 = 21 × 98/15 × 98 = 2058/1470
3. Likewise, for the 2nd fraction, since 98 × 15 = 1470,
   42/98 = 42 × 15/98 × 15 = 630/1470
4. Add the two like fractions:
   2058/1470 + 630/1470 = 2058 + 630/1470 = 2688/1470
5. 2688/1470 simplified gives 64/35
6. So, 21/15 + 42/98 = 64/35
   In mixed form: 129/35

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