Subtract 90/60 from 28/50
1st number: 28/50, 2nd number: 1 30/60
28/50 - 90/60 is -47/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 60 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 50 × 6 = 300,
28/50 = 28 × 6/50 × 6 = 168/300 - Likewise, for the 2nd fraction, since 60 × 5 = 300,
90/60 = 90 × 5/60 × 5 = 450/300 - Subtract the two like fractions:
168/300 - 450/300 = 168 - 450/300 = -282/300 - After reducing the fraction, the answer is -47/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/50-90/60 84/50-90/60