Subtract 90/50 from 18/8
1st number: 2 2/8, 2nd number: 1 40/50
18/8 - 90/50 is 9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 50 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 8 × 25 = 200,
18/8 = 18 × 25/8 × 25 = 450/200 - Likewise, for the 2nd fraction, since 50 × 4 = 200,
90/50 = 90 × 4/50 × 4 = 360/200 - Subtract the two like fractions:
450/200 - 360/200 = 450 - 360/200 = 90/200 - After reducing the fraction, the answer is 9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8-90/50 18/16-90/50 54/8-90/50 18/24-90/50 90/8-90/50 18/40-90/50 18/56-90/50