Subtract 15/5 from 20/16
1st number: 1 4/16, 2nd number: 3 0/5
20/16 - 15/5 is -7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
20/16 = 20 × 5/16 × 5 = 100/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
15/5 = 15 × 16/5 × 16 = 240/80 - Subtract the two like fractions:
100/80 - 240/80 = 100 - 240/80 = -140/80 - After reducing the fraction, the answer is -7/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/16-15/5 20/16-30/5 20/32-15/5 20/16-15/10 60/16-15/5 20/16-45/5 20/48-15/5 20/16-75/5 20/80-15/5 20/16-15/25 20/16-15/35