Add 21/81 and 75/60
1st number: 21/81, 2nd number: 1 15/60
21/81 + 75/60 is 163/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 60 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
21/81 = 21 × 20/81 × 20 = 420/1620 - Likewise, for the 2nd fraction, since 60 × 27 = 1620,
75/60 = 75 × 27/60 × 27 = 2025/1620 - Add the two like fractions:
420/1620 + 2025/1620 = 420 + 2025/1620 = 2445/1620 - 2445/1620 simplified gives 163/108
- So, 21/81 + 75/60 = 163/108
In mixed form: 155/108
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