Add 42/60 and 45/81
42/60 + 45/81 is 113/90.
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,
42/60 = 42 × 27/60 × 27 = 1134/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
45/81 = 45 × 20/81 × 20 = 900/1620 - Add the two like fractions:
1134/1620 + 900/1620 = 1134 + 900/1620 = 2034/1620 - 2034/1620 simplified gives 113/90
- So, 42/60 + 45/81 = 113/90
In mixed form: 123/90
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