Subtract 50/90 from 2/40
2/40 - 50/90 is -91/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
2/40 = 2 × 9/40 × 9 = 18/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
50/90 = 50 × 4/90 × 4 = 200/360 - Subtract the two like fractions:
18/360 - 200/360 = 18 - 200/360 = -182/360 - After reducing the fraction, the answer is -91/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/40-50/90 2/80-50/90 6/40-50/90 10/40-50/90 14/40-50/90