Answers

Add 84/21 and 42/60

1^st number: 4 0/21, 2^nd number: 42/60

84/21 + 42/60 is 47/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 21 × 20 = 420,
   84/21 = 84 × 20/21 × 20 = 1680/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   42/60 = 42 × 7/60 × 7 = 294/420
4. Add the two like fractions:
   1680/420 + 294/420 = 1680 + 294/420 = 1974/420
5. 1974/420 simplified gives 47/10
6. So, 84/21 + 42/60 = 47/10
   In mixed form: 47/10

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