Answers

Add 90/15 and 98/21

1^st number: 6 0/15, 2^nd number: 4 14/21

90/15 + 98/21 is 32/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 15 × 7 = 105,
   90/15 = 90 × 7/15 × 7 = 630/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   98/21 = 98 × 5/21 × 5 = 490/105
4. Add the two like fractions:
   630/105 + 490/105 = 630 + 490/105 = 1120/105
5. 1120/105 simplified gives 32/3
6. So, 90/15 + 98/21 = 32/3
   In mixed form: 102/3

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