Subtract 30/4 from 20/28
1st number: 20/28, 2nd number: 7 2/4
20/28 - 30/4 is -95/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 4 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
20/28 = 20 × 1/28 × 1 = 20/28 - Likewise, for the 2nd fraction, since 4 × 7 = 28,
30/4 = 30 × 7/4 × 7 = 210/28 - Subtract the two like fractions:
20/28 - 210/28 = 20 - 210/28 = -190/28 - After reducing the fraction, the answer is -95/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28-30/4 20/28-60/4 20/56-30/4 20/28-30/8 60/28-30/4 20/28-90/4 20/84-30/4 20/28-30/12 20/28-30/20 20/28-30/28