Subtract 45/16 from 40/20
1st number: 2 0/20, 2nd number: 2 13/16
40/20 - 45/16 is -13/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
40/20 = 40 × 4/20 × 4 = 160/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
45/16 = 45 × 5/16 × 5 = 225/80 - Subtract the two like fractions:
160/80 - 225/80 = 160 - 225/80 = -65/80 - After reducing the fraction, the answer is -13/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/20-45/16 40/20-90/16 40/20-45/32 40/60-45/16 40/20-45/48 40/20-45/80