Add 81/5 and 45/20
1st number: 16 1/5, 2nd number: 2 5/20
81/5 + 45/20 is 369/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
81/5 = 81 × 4/5 × 4 = 324/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
45/20 = 45 × 1/20 × 1 = 45/20 - Add the two like fractions:
324/20 + 45/20 = 324 + 45/20 = 369/20 - So, 81/5 + 45/20 = 369/20
In mixed form: 189/20
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