Subtract 5/27 from 12/90
12/90 - 5/27 is -7/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
12/90 = 12 × 3/90 × 3 = 36/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
5/27 = 5 × 10/27 × 10 = 50/270 - Subtract the two like fractions:
36/270 - 50/270 = 36 - 50/270 = -14/270 - After reducing the fraction, the answer is -7/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90-5/27 12/90-10/27 12/90-5/54 36/90-5/27 12/90-15/27 12/90-5/81 60/90-5/27 12/90-25/27 84/90-5/27 12/90-35/27