Add 21/36 and 21/60
21/36 + 21/60 is 14/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
21/60 = 21 × 3/60 × 3 = 63/180 - Add the two like fractions:
105/180 + 63/180 = 105 + 63/180 = 168/180 - 168/180 simplified gives 14/15
- So, 21/36 + 21/60 = 14/15
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