Add 81/36 and 32/20
1st number: 2 9/36, 2nd number: 1 12/20
81/36 + 32/20 is 77/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
81/36 = 81 × 5/36 × 5 = 405/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
32/20 = 32 × 9/20 × 9 = 288/180 - Add the two like fractions:
405/180 + 288/180 = 405 + 288/180 = 693/180 - 693/180 simplified gives 77/20
- So, 81/36 + 32/20 = 77/20
In mixed form: 317/20
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