Answers

Add 40/21 and 8/40

1^st number: 1 19/21, 2^nd number: 8/40

40/21 + 8/40 is 221/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 21 × 40 = 840,
   40/21 = 40 × 40/21 × 40 = 1600/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   8/40 = 8 × 21/40 × 21 = 168/840
4. Add the two like fractions:
   1600/840 + 168/840 = 1600 + 168/840 = 1768/840
5. 1768/840 simplified gives 221/105
6. So, 40/21 + 8/40 = 221/105
   In mixed form: 211/105

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