Subtract 90/27 from 9/4
1st number: 2 1/4, 2nd number: 3 9/27
9/4 - 90/27 is -13/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 4 × 27 = 108,
9/4 = 9 × 27/4 × 27 = 243/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
90/27 = 90 × 4/27 × 4 = 360/108 - Subtract the two like fractions:
243/108 - 360/108 = 243 - 360/108 = -117/108 - After reducing the fraction, the answer is -13/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/4-90/27 9/8-90/27 9/4-90/54 27/4-90/27 9/12-90/27 9/4-90/81 45/4-90/27 9/20-90/27 63/4-90/27 9/28-90/27