Answers

Add 15/35 and 40/21

1^st number: 15/35, 2^nd number: 1 19/21

15/35 + 40/21 is 7/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 35 × 3 = 105,
   15/35 = 15 × 3/35 × 3 = 45/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   40/21 = 40 × 5/21 × 5 = 200/105
4. Add the two like fractions:
   45/105 + 200/105 = 45 + 200/105 = 245/105
5. 245/105 simplified gives 7/3
6. So, 15/35 + 40/21 = 7/3
   In mixed form: 21/3

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