Add 3/20 and 27/21
1st number: 3/20, 2nd number: 1 6/21
3/20 + 27/21 is 201/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
3/20 = 3 × 21/20 × 21 = 63/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
27/21 = 27 × 20/21 × 20 = 540/420 - Add the two like fractions:
63/420 + 540/420 = 63 + 540/420 = 603/420 - 603/420 simplified gives 201/140
- So, 3/20 + 27/21 = 201/140
In mixed form: 161/140
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