Subtract 30/90 from 27/54
27/54 - 30/90 is 1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
27/54 = 27 × 5/54 × 5 = 135/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
30/90 = 30 × 3/90 × 3 = 90/270 - Subtract the two like fractions:
135/270 - 90/270 = 135 - 90/270 = 45/270 - After reducing the fraction, the answer is 1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 27/54-60/90 81/54-30/90