Subtract 20/54 from 12/30
12/30 - 20/54 is 4/135.
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,
12/30 = 12 × 9/30 × 9 = 108/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
20/54 = 20 × 5/54 × 5 = 100/270 - Subtract the two like fractions:
108/270 - 100/270 = 108 - 100/270 = 8/270 - After reducing the fraction, the answer is 4/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30-20/54 12/30-40/54 12/60-20/54 36/30-20/54 12/30-60/54 12/90-20/54 60/30-20/54 84/30-20/54