Answers

Add 48/21 and 30/15

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

48/21 + 30/15 is 30/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 15 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 21 × 5 = 105,
   48/21 = 48 × 5/21 × 5 = 240/105
3. Likewise, for the 2nd fraction, since 15 × 7 = 105,
   30/15 = 30 × 7/15 × 7 = 210/105
4. Add the two like fractions:
   240/105 + 210/105 = 240 + 210/105 = 450/105
5. 450/105 simplified gives 30/7
6. So, 48/21 + 30/15 = 30/7
   In mixed form: 42/7

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