Add 21/60 and 30/45
21/60 + 30/45 is 61/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 45 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 45 × 4 = 180,
30/45 = 30 × 4/45 × 4 = 120/180 - Add the two like fractions:
63/180 + 120/180 = 63 + 120/180 = 183/180 - 183/180 simplified gives 61/60
- So, 21/60 + 30/45 = 61/60
In mixed form: 11/60
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