Subtract 90/27 from 1/12
1st number: 1/12, 2nd number: 3 9/27
1/12 - 90/27 is -13/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
1/12 = 1 × 9/12 × 9 = 9/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
90/27 = 90 × 4/27 × 4 = 360/108 - Subtract the two like fractions:
9/108 - 360/108 = 9 - 360/108 = -351/108 - After reducing the fraction, the answer is -13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/12-90/27 1/24-90/27 1/12-90/54 3/12-90/27 1/36-90/27 1/12-90/81 5/12-90/27 1/60-90/27 7/12-90/27 1/84-90/27