Subtract 4/20 from 21/15
1st number: 1 6/15, 2nd number: 4/20
21/15 - 4/20 is 6/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
21/15 = 21 × 4/15 × 4 = 84/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
4/20 = 4 × 3/20 × 3 = 12/60 - Subtract the two like fractions:
84/60 - 12/60 = 84 - 12/60 = 72/60 - After reducing the fraction, the answer is 6/5
- In mixed form: 11/5
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