Subtract 90/48 from 5/7
1st number: 5/7, 2nd number: 1 42/48
5/7 - 90/48 is -65/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 7 × 48 = 336,
5/7 = 5 × 48/7 × 48 = 240/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
90/48 = 90 × 7/48 × 7 = 630/336 - Subtract the two like fractions:
240/336 - 630/336 = 240 - 630/336 = -390/336 - After reducing the fraction, the answer is -65/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7-90/48 5/14-90/48 5/7-90/96 15/7-90/48 5/21-90/48 25/7-90/48 5/35-90/48 35/7-90/48 5/49-90/48