Add 3/5 and 9/20
3/5 + 9/20 is 21/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
3/5 = 3 × 4/5 × 4 = 12/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
9/20 = 9 × 1/20 × 1 = 9/20 - Add the two like fractions:
12/20 + 9/20 = 12 + 9/20 = 21/20 - So, 3/5 + 9/20 = 21/20
In mixed form: 11/20
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