Answers

Add 84/28 and 2/40

1^st number: 3 0/28, 2^nd number: 2/40

84/28 + 2/40 is 61/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 28 × 10 = 280,
   84/28 = 84 × 10/28 × 10 = 840/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   2/40 = 2 × 7/40 × 7 = 14/280
4. Add the two like fractions:
   840/280 + 14/280 = 840 + 14/280 = 854/280
5. 854/280 simplified gives 61/20
6. So, 84/28 + 2/40 = 61/20
   In mixed form: 31/20

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