Subtract 9/28 from 15/50, Solve 15/50

Subtract 9/28 from 15/50

15/50 - 9/28 is -3/140.

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,
15/50 = 15 × 14/50 × 14 = 210/700
Likewise, for the 2nd fraction, since 28 × 25 = 700,
9/28 = 9 × 25/28 × 25 = 225/700
Subtract the two like fractions:
210/700 - 225/700 = 210 - 225/700 = -15/700
After reducing the fraction, the answer is -3/140

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad