Subtract 42/7 from 24/28
1st number: 24/28, 2nd number: 6 0/7
24/28 - 42/7 is -36/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
24/28 = 24 × 1/28 × 1 = 24/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
42/7 = 42 × 4/7 × 4 = 168/28 - Subtract the two like fractions:
24/28 - 168/28 = 24 - 168/28 = -144/28 - After reducing the fraction, the answer is -36/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/28-42/7 24/28-84/7 24/56-42/7 24/28-42/14 72/28-42/7 24/84-42/7 24/28-42/21 24/28-42/35 24/28-42/49