Answers

Add 45/70 and 24/21

1^st number: 45/70, 2^nd number: 1 3/21

45/70 + 24/21 is 25/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 21 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 70 × 3 = 210,
   45/70 = 45 × 3/70 × 3 = 135/210
3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
   24/21 = 24 × 10/21 × 10 = 240/210
4. Add the two like fractions:
   135/210 + 240/210 = 135 + 240/210 = 375/210
5. 375/210 simplified gives 25/14
6. So, 45/70 + 24/21 = 25/14
   In mixed form: 111/14

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