Subtract 21/36 from 81/15
1st number: 5 6/15, 2nd number: 21/36
81/15 - 21/36 is 289/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 15 × 12 = 180,
81/15 = 81 × 12/15 × 12 = 972/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Subtract the two like fractions:
972/180 - 105/180 = 972 - 105/180 = 867/180 - After reducing the fraction, the answer is 289/60
- In mixed form: 449/60
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