Add 84/5 and 21/12
1st number: 16 4/5, 2nd number: 1 9/12
84/5 + 21/12 is 371/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
84/5 = 84 × 12/5 × 12 = 1008/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60 - Add the two like fractions:
1008/60 + 105/60 = 1008 + 105/60 = 1113/60 - 1113/60 simplified gives 371/20
- So, 84/5 + 21/12 = 371/20
In mixed form: 1811/20
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