Add 21/3 and 81/20
1st number: 7 0/3, 2nd number: 4 1/20
21/3 + 81/20 is 221/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 3 × 20 = 60,
21/3 = 21 × 20/3 × 20 = 420/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
81/20 = 81 × 3/20 × 3 = 243/60 - Add the two like fractions:
420/60 + 243/60 = 420 + 243/60 = 663/60 - 663/60 simplified gives 221/20
- So, 21/3 + 81/20 = 221/20
In mixed form: 111/20
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