Subtract 42/54 from 49/20
1st number: 2 9/20, 2nd number: 42/54
49/20 - 42/54 is 301/180.
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,
49/20 = 49 × 27/20 × 27 = 1323/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
42/54 = 42 × 10/54 × 10 = 420/540 - Subtract the two like fractions:
1323/540 - 420/540 = 1323 - 420/540 = 903/540 - After reducing the fraction, the answer is 301/180
- In mixed form: 1121/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/20-42/54 49/20-84/54 49/40-42/54 49/60-42/54