Answers

Add 50/21 and 40/45

1^st number: 2 8/21, 2^nd number: 40/45

50/21 + 40/45 is 206/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 45 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 21 × 15 = 315,
   50/21 = 50 × 15/21 × 15 = 750/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   40/45 = 40 × 7/45 × 7 = 280/315
4. Add the two like fractions:
   750/315 + 280/315 = 750 + 280/315 = 1030/315
5. 1030/315 simplified gives 206/63
6. So, 50/21 + 40/45 = 206/63
   In mixed form: 317/63

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