Add 81/60 and 42/90
1st number: 1 21/60, 2nd number: 42/90
81/60 + 42/90 is 109/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
81/60 = 81 × 3/60 × 3 = 243/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
42/90 = 42 × 2/90 × 2 = 84/180 - Add the two like fractions:
243/180 + 84/180 = 243 + 84/180 = 327/180 - 327/180 simplified gives 109/60
- So, 81/60 + 42/90 = 109/60
In mixed form: 149/60
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