Add 5/20 and 21/40
5/20 + 21/40 is 31/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
5/20 = 5 × 2/20 × 2 = 10/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
21/40 = 21 × 1/40 × 1 = 21/40 - Add the two like fractions:
10/40 + 21/40 = 10 + 21/40 = 31/40 - So, 5/20 + 21/40 = 31/40
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