Subtract 9/10 from 2/40
2/40 - 9/10 is -17/20.
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,
2/40 = 2 × 1/40 × 1 = 2/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
9/10 = 9 × 4/10 × 4 = 36/40 - Subtract the two like fractions:
2/40 - 36/40 = 2 - 36/40 = -34/40 - After reducing the fraction, the answer is -17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/40-9/10 2/40-18/10 2/80-9/10 2/40-9/20 6/40-9/10 2/40-27/10 2/40-9/30 10/40-9/10 2/40-45/10 2/40-9/50 14/40-9/10 2/40-63/10 2/40-9/70