Add 42/27 and 81/20
1st number: 1 15/27, 2nd number: 4 1/20
42/27 + 81/20 is 1009/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
42/27 = 42 × 20/27 × 20 = 840/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
81/20 = 81 × 27/20 × 27 = 2187/540 - Add the two like fractions:
840/540 + 2187/540 = 840 + 2187/540 = 3027/540 - 3027/540 simplified gives 1009/180
- So, 42/27 + 81/20 = 1009/180
In mixed form: 5109/180
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