Subtract 90/20 from 7/54
1st number: 7/54, 2nd number: 4 10/20
7/54 - 90/20 is -118/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 54 × 10 = 540,
7/54 = 7 × 10/54 × 10 = 70/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
90/20 = 90 × 27/20 × 27 = 2430/540 - Subtract the two like fractions:
70/540 - 2430/540 = 70 - 2430/540 = -2360/540 - After reducing the fraction, the answer is -118/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/54-90/20 7/54-90/40 21/54-90/20 7/54-90/60 35/54-90/20 49/54-90/20