Subtract 21/60 from 15/9
1st number: 1 6/9, 2nd number: 21/60
15/9 - 21/60 is 79/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
15/9 = 15 × 20/9 × 20 = 300/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
21/60 = 21 × 3/60 × 3 = 63/180 - Subtract the two like fractions:
300/180 - 63/180 = 300 - 63/180 = 237/180 - After reducing the fraction, the answer is 79/60
- In mixed form: 119/60
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