Answers

Add 40/70 and 45/21

1^st number: 40/70, 2^nd number: 2 3/21

40/70 + 45/21 is 19/7.

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,
   40/70 = 40 × 3/70 × 3 = 120/210
3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
   45/21 = 45 × 10/21 × 10 = 450/210
4. Add the two like fractions:
   120/210 + 450/210 = 120 + 450/210 = 570/210
5. 570/210 simplified gives 19/7
6. So, 40/70 + 45/21 = 19/7
   In mixed form: 25/7

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