Answers

Add 20/21 and 98/45

1^st number: 20/21, 2^nd number: 2 8/45

20/21 + 98/45 is 986/315.

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,
   20/21 = 20 × 15/21 × 15 = 300/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   98/45 = 98 × 7/45 × 7 = 686/315
4. Add the two like fractions:
   300/315 + 686/315 = 300 + 686/315 = 986/315
5. So, 20/21 + 98/45 = 986/315
   In mixed form: 341/315

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