Subtract 4/7 from 80/42
1st number: 1 38/42, 2nd number: 4/7
80/42 - 4/7 is 4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
80/42 = 80 × 1/42 × 1 = 80/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
4/7 = 4 × 6/7 × 6 = 24/42 - Subtract the two like fractions:
80/42 - 24/42 = 80 - 24/42 = 56/42 - After reducing the fraction, the answer is 4/3
- In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42-8/7 80/84-4/7 80/42-4/14 80/42-12/7 80/42-4/21 80/42-20/7 80/42-4/35 80/42-28/7 80/42-4/49