Answers

Add 9/21 and 8/45

9/21 + 8/45 is 191/315.

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,
   9/21 = 9 × 15/21 × 15 = 135/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   8/45 = 8 × 7/45 × 7 = 56/315
4. Add the two like fractions:
   135/315 + 56/315 = 135 + 56/315 = 191/315
5. So, 9/21 + 8/45 = 191/315

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