Subtract 36/20 from 4/40
1st number: 4/40, 2nd number: 1 16/20
4/40 - 36/20 is -17/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
4/40 = 4 × 1/40 × 1 = 4/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
36/20 = 36 × 2/20 × 2 = 72/40 - Subtract the two like fractions:
4/40 - 72/40 = 4 - 72/40 = -68/40 - After reducing the fraction, the answer is -17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40-36/20 4/40-72/20 4/80-36/20 4/40-36/40 12/40-36/20 4/40-36/60 20/40-36/20 28/40-36/20