Subtract 30/45 from 3/54
3/54 - 30/45 is -11/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 45 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
3/54 = 3 × 5/54 × 5 = 15/270 - Likewise, for the 2nd fraction, since 45 × 6 = 270,
30/45 = 30 × 6/45 × 6 = 180/270 - Subtract the two like fractions:
15/270 - 180/270 = 15 - 180/270 = -165/270 - After reducing the fraction, the answer is -11/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/54-30/45 3/54-60/45 3/54-30/90 9/54-30/45 3/54-90/45 15/54-30/45 21/54-30/45