Answers

Add 84/48 and 21/40

1^st number: 1 36/48, 2^nd number: 21/40

84/48 + 21/40 is 91/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 48 and 40 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 48 × 5 = 240,
   84/48 = 84 × 5/48 × 5 = 420/240
3. Likewise, for the 2nd fraction, since 40 × 6 = 240,
   21/40 = 21 × 6/40 × 6 = 126/240
4. Add the two like fractions:
   420/240 + 126/240 = 420 + 126/240 = 546/240
5. 546/240 simplified gives 91/40
6. So, 84/48 + 21/40 = 91/40
   In mixed form: 211/40

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