Subtract 42/54 from 84/20
1st number: 4 4/20, 2nd number: 42/54
84/20 - 42/54 is 154/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 54 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
84/20 = 84 × 27/20 × 27 = 2268/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
42/54 = 42 × 10/54 × 10 = 420/540 - Subtract the two like fractions:
2268/540 - 420/540 = 2268 - 420/540 = 1848/540 - After reducing the fraction, the answer is 154/45
- In mixed form: 319/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-84/54 84/40-42/54 84/60-42/54