Subtract 45/90 from 3/48
3/48 - 45/90 is -7/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 48 × 15 = 720,
3/48 = 3 × 15/48 × 15 = 45/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
45/90 = 45 × 8/90 × 8 = 360/720 - Subtract the two like fractions:
45/720 - 360/720 = 45 - 360/720 = -315/720 - After reducing the fraction, the answer is -7/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/48-45/90 3/96-45/90 9/48-45/90 15/48-45/90 21/48-45/90