Add 21/60 and 3/18
21/60 + 3/18 is 31/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
21/60 = 21 × 3/60 × 3 = 63/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
3/18 = 3 × 10/18 × 10 = 30/180 - Add the two like fractions:
63/180 + 30/180 = 63 + 30/180 = 93/180 - 93/180 simplified gives 31/60
- So, 21/60 + 3/18 = 31/60
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