Add 27/80 and 21/40
27/80 + 21/40 is 69/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 40 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
27/80 = 27 × 1/80 × 1 = 27/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
21/40 = 21 × 2/40 × 2 = 42/80 - Add the two like fractions:
27/80 + 42/80 = 27 + 42/80 = 69/80 - So, 27/80 + 21/40 = 69/80
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