Subtract 60/20 from 18/28
1st number: 18/28, 2nd number: 3 0/20
18/28 - 60/20 is -33/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
18/28 = 18 × 5/28 × 5 = 90/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
60/20 = 60 × 7/20 × 7 = 420/140 - Subtract the two like fractions:
90/140 - 420/140 = 90 - 420/140 = -330/140 - After reducing the fraction, the answer is -33/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28-60/20 18/56-60/20 18/28-60/40 54/28-60/20 18/84-60/20 90/28-60/20