Subtract 45/54 from 4/30
4/30 - 45/54 is -7/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
4/30 = 4 × 9/30 × 9 = 36/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
45/54 = 45 × 5/54 × 5 = 225/270 - Subtract the two like fractions:
36/270 - 225/270 = 36 - 225/270 = -189/270 - After reducing the fraction, the answer is -7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30-45/54 4/30-90/54 4/60-45/54 12/30-45/54 4/90-45/54 20/30-45/54 28/30-45/54