Subtract 16/20 from 63/21
1st number: 3 0/21, 2nd number: 16/20
63/21 - 16/20 is 11/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
63/21 = 63 × 20/21 × 20 = 1260/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
16/20 = 16 × 21/20 × 21 = 336/420 - Subtract the two like fractions:
1260/420 - 336/420 = 1260 - 336/420 = 924/420 - After reducing the fraction, the answer is 11/5
- In mixed form: 21/5
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