Add 9/4 and 21/60
1st number: 2 1/4, 2nd number: 21/60
9/4 + 21/60 is 13/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
9/4 = 9 × 15/4 × 15 = 135/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
21/60 = 21 × 1/60 × 1 = 21/60 - Add the two like fractions:
135/60 + 21/60 = 135 + 21/60 = 156/60 - 156/60 simplified gives 13/5
- So, 9/4 + 21/60 = 13/5
In mixed form: 23/5
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