Answers

Add 28/40 and 63/60

1^st number: 28/40, 2^nd number: 1 3/60

28/40 + 63/60 is 7/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 60 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 40 × 3 = 120,
   28/40 = 28 × 3/40 × 3 = 84/120
3. Likewise, for the 2nd fraction, since 60 × 2 = 120,
   63/60 = 63 × 2/60 × 2 = 126/120
4. Add the two like fractions:
   84/120 + 126/120 = 84 + 126/120 = 210/120
5. 210/120 simplified gives 7/4
6. So, 28/40 + 63/60 = 7/4
   In mixed form: 13/4

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