Answers

Add 20/84 and 14/90

20/84 + 14/90 is 124/315.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 90 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 84 × 15 = 1260,
   20/84 = 20 × 15/84 × 15 = 300/1260
3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
   14/90 = 14 × 14/90 × 14 = 196/1260
4. Add the two like fractions:
   300/1260 + 196/1260 = 300 + 196/1260 = 496/1260
5. 496/1260 simplified gives 124/315
6. So, 20/84 + 14/90 = 124/315

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