Add 27/60 and 21/80
27/60 + 21/80 is 57/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 60 × 4 = 240,
27/60 = 27 × 4/60 × 4 = 108/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
21/80 = 21 × 3/80 × 3 = 63/240 - Add the two like fractions:
108/240 + 63/240 = 108 + 63/240 = 171/240 - 171/240 simplified gives 57/80
- So, 27/60 + 21/80 = 57/80
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