Answers

Add 10/84 and 15/20

10/84 + 15/20 is 73/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 20 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   10/84 = 10 × 5/84 × 5 = 50/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   15/20 = 15 × 21/20 × 21 = 315/420
4. Add the two like fractions:
   50/420 + 315/420 = 50 + 315/420 = 365/420
5. 365/420 simplified gives 73/84
6. So, 10/84 + 15/20 = 73/84

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