Subtract 80/7 from 42/4
1st number: 10 2/4, 2nd number: 11 3/7
42/4 - 80/7 is -13/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
42/4 = 42 × 7/4 × 7 = 294/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
80/7 = 80 × 4/7 × 4 = 320/28 - Subtract the two like fractions:
294/28 - 320/28 = 294 - 320/28 = -26/28 - After reducing the fraction, the answer is -13/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-80/7 42/8-80/7 42/4-80/14 42/12-80/7 42/4-80/21 42/20-80/7 42/4-80/35 42/28-80/7 42/4-80/49