Add 42/20 and 81/36
1st number: 2 2/20, 2nd number: 2 9/36
42/20 + 81/36 is 87/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
42/20 = 42 × 9/20 × 9 = 378/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
81/36 = 81 × 5/36 × 5 = 405/180 - Add the two like fractions:
378/180 + 405/180 = 378 + 405/180 = 783/180 - 783/180 simplified gives 87/20
- So, 42/20 + 81/36 = 87/20
In mixed form: 47/20
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