Add 21/60 and 15/18
21/60 + 15/18 is 71/60.
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,
15/18 = 15 × 10/18 × 10 = 150/180 - Add the two like fractions:
63/180 + 150/180 = 63 + 150/180 = 213/180 - 213/180 simplified gives 71/60
- So, 21/60 + 15/18 = 71/60
In mixed form: 111/60
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