Answers

Add 35/20 and 90/84

1^st number: 1 15/20, 2^nd number: 1 6/84

35/20 + 90/84 is 79/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 84 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 20 × 21 = 420,
   35/20 = 35 × 21/20 × 21 = 735/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   90/84 = 90 × 5/84 × 5 = 450/420
4. Add the two like fractions:
   735/420 + 450/420 = 735 + 450/420 = 1185/420
5. 1185/420 simplified gives 79/28
6. So, 35/20 + 90/84 = 79/28
   In mixed form: 223/28

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