Subtract 50/40 from 12/28
1st number: 12/28, 2nd number: 1 10/40
12/28 - 50/40 is -23/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
12/28 = 12 × 10/28 × 10 = 120/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
50/40 = 50 × 7/40 × 7 = 350/280 - Subtract the two like fractions:
120/280 - 350/280 = 120 - 350/280 = -230/280 - After reducing the fraction, the answer is -23/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28-50/40 12/56-50/40 12/28-50/80 36/28-50/40 12/84-50/40 60/28-50/40 84/28-50/40