Add 81/60 and 90/81
1st number: 1 21/60, 2nd number: 1 9/81
81/60 + 90/81 is 443/180.
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,
81/60 = 81 × 27/60 × 27 = 2187/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
90/81 = 90 × 20/81 × 20 = 1800/1620 - Add the two like fractions:
2187/1620 + 1800/1620 = 2187 + 1800/1620 = 3987/1620 - 3987/1620 simplified gives 443/180
- So, 81/60 + 90/81 = 443/180
In mixed form: 283/180
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