Subtract 20/54 from 42/5
1st number: 8 2/5, 2nd number: 20/54
42/5 - 20/54 is 1084/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 5 × 54 = 270,
42/5 = 42 × 54/5 × 54 = 2268/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
20/54 = 20 × 5/54 × 5 = 100/270 - Subtract the two like fractions:
2268/270 - 100/270 = 2268 - 100/270 = 2168/270 - After reducing the fraction, the answer is 1084/135
- In mixed form: 84/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5-20/54 42/5-40/54 42/10-20/54 42/5-60/54 42/15-20/54 42/25-20/54 42/35-20/54