Subtract 3/20 from 80/21
1st number: 3 17/21, 2nd number: 3/20
80/21 - 3/20 is 1537/420.
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,
80/21 = 80 × 20/21 × 20 = 1600/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
3/20 = 3 × 21/20 × 21 = 63/420 - Subtract the two like fractions:
1600/420 - 63/420 = 1600 - 63/420 = 1537/420 - In mixed form: 3277/420
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