Subtract 20/28 from 9/50
9/50 - 20/28 is -187/350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 28 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 50 × 14 = 700,
9/50 = 9 × 14/50 × 14 = 126/700 - Likewise, for the 2nd fraction, since 28 × 25 = 700,
20/28 = 20 × 25/28 × 25 = 500/700 - Subtract the two like fractions:
126/700 - 500/700 = 126 - 500/700 = -374/700 - After reducing the fraction, the answer is -187/350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/50-20/28 9/50-40/28 9/50-20/56 27/50-20/28 9/50-60/28 9/50-20/84 45/50-20/28 63/50-20/28