Subtract 20/75 from 21/15
1st number: 1 6/15, 2nd number: 20/75
21/15 - 20/75 is 17/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 75 is 75
Next, find the equivalent fraction of both fractional numbers with denominator 75 - For the 1st fraction, since 15 × 5 = 75,
21/15 = 21 × 5/15 × 5 = 105/75 - Likewise, for the 2nd fraction, since 75 × 1 = 75,
20/75 = 20 × 1/75 × 1 = 20/75 - Subtract the two like fractions:
105/75 - 20/75 = 105 - 20/75 = 85/75 - After reducing the fraction, the answer is 17/15
- In mixed form: 12/15
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