Add 18/20 and 27/84
18/20 + 27/84 is 171/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
18/20 = 18 × 21/20 × 21 = 378/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
27/84 = 27 × 5/84 × 5 = 135/420 - Add the two like fractions:
378/420 + 135/420 = 378 + 135/420 = 513/420 - 513/420 simplified gives 171/140
- So, 18/20 + 27/84 = 171/140
In mixed form: 131/140
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