Subtract 12/27 from 45/90
45/90 - 12/27 is 1/18.
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,
45/90 = 45 × 3/90 × 3 = 135/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
12/27 = 12 × 10/27 × 10 = 120/270 - Subtract the two like fractions:
135/270 - 120/270 = 135 - 120/270 = 15/270 - After reducing the fraction, the answer is 1/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 45/90-24/27 45/90-12/54 45/90-36/27 45/90-12/81 45/90-60/27 45/90-84/27