Subtract 80/42 from 63/3
1st number: 21 0/3, 2nd number: 1 38/42
63/3 - 80/42 is 401/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 3 × 14 = 42,
63/3 = 63 × 14/3 × 14 = 882/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
80/42 = 80 × 1/42 × 1 = 80/42 - Subtract the two like fractions:
882/42 - 80/42 = 882 - 80/42 = 802/42 - After reducing the fraction, the answer is 401/21
- In mixed form: 192/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/6-80/42 63/3-80/84 63/9-80/42 63/15-80/42 63/21-80/42