Subtract 80/90 from 7/48
7/48 - 80/90 is -107/144.
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,
7/48 = 7 × 15/48 × 15 = 105/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
80/90 = 80 × 8/90 × 8 = 640/720 - Subtract the two like fractions:
105/720 - 640/720 = 105 - 640/720 = -535/720 - After reducing the fraction, the answer is -107/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/48-80/90 7/96-80/90 21/48-80/90 35/48-80/90 49/48-80/90