Subtract 90/27 from 7/36
1st number: 7/36, 2nd number: 3 9/27
7/36 - 90/27 is -113/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 36 × 3 = 108,
7/36 = 7 × 3/36 × 3 = 21/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
90/27 = 90 × 4/27 × 4 = 360/108 - Subtract the two like fractions:
21/108 - 360/108 = 21 - 360/108 = -339/108 - After reducing the fraction, the answer is -113/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/36-90/27 7/72-90/27 7/36-90/54 21/36-90/27 7/36-90/81 35/36-90/27 49/36-90/27