Subtract 72/80 from 8/25
8/25 - 72/80 is -29/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 25 × 16 = 400,
8/25 = 8 × 16/25 × 16 = 128/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
72/80 = 72 × 5/80 × 5 = 360/400 - Subtract the two like fractions:
128/400 - 360/400 = 128 - 360/400 = -232/400 - After reducing the fraction, the answer is -29/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/25-72/80 8/50-72/80 24/25-72/80 8/75-72/80 40/25-72/80 56/25-72/80