Subtract 48/60 from 18/28
18/28 - 48/60 is -11/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
18/28 = 18 × 15/28 × 15 = 270/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
48/60 = 48 × 7/60 × 7 = 336/420 - Subtract the two like fractions:
270/420 - 336/420 = 270 - 336/420 = -66/420 - After reducing the fraction, the answer is -11/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28-48/60 18/28-96/60 18/56-48/60 54/28-48/60 18/84-48/60 90/28-48/60