Subtract 8/10 from 25/40
25/40 - 8/10 is -7/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
25/40 = 25 × 1/40 × 1 = 25/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
8/10 = 8 × 4/10 × 4 = 32/40 - Subtract the two like fractions:
25/40 - 32/40 = 25 - 32/40 = -7/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/40-8/10 25/40-16/10 25/80-8/10 25/40-8/20 75/40-8/10 25/40-24/10 25/40-8/30 25/40-40/10 25/40-8/50 25/40-56/10 25/40-8/70