Subtract 45/48 from 12/15
12/15 - 45/48 is -11/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
12/15 = 12 × 16/15 × 16 = 192/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
45/48 = 45 × 5/48 × 5 = 225/240 - Subtract the two like fractions:
192/240 - 225/240 = 192 - 225/240 = -33/240 - After reducing the fraction, the answer is -11/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15-45/48 12/15-90/48 12/30-45/48 12/15-45/96 36/15-45/48 12/45-45/48 60/15-45/48 12/75-45/48 84/15-45/48