Subtract 4/12 from 90/27
1st number: 3 9/27, 2nd number: 4/12
90/27 - 4/12 is 3/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 27 × 4 = 108,
90/27 = 90 × 4/27 × 4 = 360/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
4/12 = 4 × 9/12 × 9 = 36/108 - Subtract the two like fractions:
360/108 - 36/108 = 360 - 36/108 = 324/108 - After reducing the fraction, the answer is 3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/27-8/12 90/54-4/12 90/27-4/24 90/81-4/12 90/27-4/36 90/27-20/12 90/27-4/60 90/27-28/12 90/27-4/84