Subtract 7/20 from 54/16
1st number: 3 6/16, 2nd number: 7/20
54/16 - 7/20 is 121/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
54/16 = 54 × 5/16 × 5 = 270/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
7/20 = 7 × 4/20 × 4 = 28/80 - Subtract the two like fractions:
270/80 - 28/80 = 270 - 28/80 = 242/80 - After reducing the fraction, the answer is 121/40
- In mixed form: 31/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/16-14/20 54/32-7/20 54/16-7/40 54/16-21/20 54/48-7/20 54/16-7/60 54/16-35/20 54/80-7/20 54/16-49/20