Answers

Add 70/40 and 50/21

1^st number: 1 30/40, 2^nd number: 2 8/21

70/40 + 50/21 is 347/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 21 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   70/40 = 70 × 21/40 × 21 = 1470/840
3. Likewise, for the 2nd fraction, since 21 × 40 = 840,
   50/21 = 50 × 40/21 × 40 = 2000/840
4. Add the two like fractions:
   1470/840 + 2000/840 = 1470 + 2000/840 = 3470/840
5. 3470/840 simplified gives 347/84
6. So, 70/40 + 50/21 = 347/84
   In mixed form: 411/84

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