Answers

Add 35/84 and 20/90

35/84 + 20/90 is 23/36.

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,
   35/84 = 35 × 15/84 × 15 = 525/1260
3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
   20/90 = 20 × 14/90 × 14 = 280/1260
4. Add the two like fractions:
   525/1260 + 280/1260 = 525 + 280/1260 = 805/1260
5. 805/1260 simplified gives 23/36
6. So, 35/84 + 20/90 = 23/36

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