Subtract 18/20 from 16/25
16/25 - 18/20 is -13/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 25 × 4 = 100,
16/25 = 16 × 4/25 × 4 = 64/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
18/20 = 18 × 5/20 × 5 = 90/100 - Subtract the two like fractions:
64/100 - 90/100 = 64 - 90/100 = -26/100 - After reducing the fraction, the answer is -13/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/25-18/20 16/25-36/20 16/50-18/20 16/25-18/40 48/25-18/20 16/25-54/20 16/75-18/20 16/25-18/60 80/25-18/20 16/25-90/20