Add 81/60 and 42/20
1st number: 1 21/60, 2nd number: 2 2/20
81/60 + 42/20 is 69/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
81/60 = 81 × 1/60 × 1 = 81/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Add the two like fractions:
81/60 + 126/60 = 81 + 126/60 = 207/60 - 207/60 simplified gives 69/20
- So, 81/60 + 42/20 = 69/20
In mixed form: 39/20
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