Add 20/5 and 81/60
1st number: 4 0/5, 2nd number: 1 21/60
20/5 + 81/60 is 107/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
20/5 = 20 × 12/5 × 12 = 240/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
81/60 = 81 × 1/60 × 1 = 81/60 - Add the two like fractions:
240/60 + 81/60 = 240 + 81/60 = 321/60 - 321/60 simplified gives 107/20
- So, 20/5 + 81/60 = 107/20
In mixed form: 57/20
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