Add 72/81 and 54/60
72/81 + 54/60 is 161/90.
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,
72/81 = 72 × 20/81 × 20 = 1440/1620 - Likewise, for the 2nd fraction, since 60 × 27 = 1620,
54/60 = 54 × 27/60 × 27 = 1458/1620 - Add the two like fractions:
1440/1620 + 1458/1620 = 1440 + 1458/1620 = 2898/1620 - 2898/1620 simplified gives 161/90
- So, 72/81 + 54/60 = 161/90
In mixed form: 171/90
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