Answers

Add 84/28 and 30/20

1^st number: 3 0/28, 2^nd number: 1 10/20

84/28 + 30/20 is 9/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 28 × 5 = 140,
   84/28 = 84 × 5/28 × 5 = 420/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   30/20 = 30 × 7/20 × 7 = 210/140
4. Add the two like fractions:
   420/140 + 210/140 = 420 + 210/140 = 630/140
5. 630/140 simplified gives 9/2
6. So, 84/28 + 30/20 = 9/2
   In mixed form: 41/2

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