Add 81/60 and 54/81, Solve 1 21/60 + 54/81 as a fraction

Add 81/60 and 54/81

1^st number: 1 21/60, 2^nd number: 54/81

81/60 + 54/81 is 121/60.

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,
54/81 = 54 × 20/81 × 20 = 1080/1620
Add the two like fractions:
2187/1620 + 1080/1620 = 2187 + 1080/1620 = 3267/1620
3267/1620 simplified gives 121/60
So, 81/60 + 54/81 = 121/60
In mixed form: 21/60

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