Add 90/60 and 15/81
1st number: 1 30/60, 2nd number: 15/81
90/60 + 15/81 is 91/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 60 × 27 = 1620,
90/60 = 90 × 27/60 × 27 = 2430/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
15/81 = 15 × 20/81 × 20 = 300/1620 - Add the two like fractions:
2430/1620 + 300/1620 = 2430 + 300/1620 = 2730/1620 - 2730/1620 simplified gives 91/54
- So, 90/60 + 15/81 = 91/54
In mixed form: 137/54
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