Subtract 48/45 from 20/54
1st number: 20/54, 2nd number: 1 3/45
20/54 - 48/45 is -94/135.
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,
20/54 = 20 × 5/54 × 5 = 100/270 - Likewise, for the 2nd fraction, since 45 × 6 = 270,
48/45 = 48 × 6/45 × 6 = 288/270 - Subtract the two like fractions:
100/270 - 288/270 = 100 - 288/270 = -188/270 - After reducing the fraction, the answer is -94/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/54-48/45 20/54-96/45 20/54-48/90 60/54-48/45