Subtract 30/50 from 9/28
9/28 - 30/50 is -39/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 50 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 28 × 25 = 700,
9/28 = 9 × 25/28 × 25 = 225/700 - Likewise, for the 2nd fraction, since 50 × 14 = 700,
30/50 = 30 × 14/50 × 14 = 420/700 - Subtract the two like fractions:
225/700 - 420/700 = 225 - 420/700 = -195/700 - After reducing the fraction, the answer is -39/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28-30/50 9/28-60/50 9/56-30/50 27/28-30/50 9/28-90/50 9/84-30/50 45/28-30/50 63/28-30/50