Add 81/40 and 42/20
1st number: 2 1/40, 2nd number: 2 2/20
81/40 + 42/20 is 33/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
81/40 = 81 × 1/40 × 1 = 81/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
42/20 = 42 × 2/20 × 2 = 84/40 - Add the two like fractions:
81/40 + 84/40 = 81 + 84/40 = 165/40 - 165/40 simplified gives 33/8
- So, 81/40 + 42/20 = 33/8
In mixed form: 41/8
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