Subtract 28/32 from 50/70
50/70 - 28/32 is -9/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 32 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 70 × 16 = 1120,
50/70 = 50 × 16/70 × 16 = 800/1120 - Likewise, for the 2nd fraction, since 32 × 35 = 1120,
28/32 = 28 × 35/32 × 35 = 980/1120 - Subtract the two like fractions:
800/1120 - 980/1120 = 800 - 980/1120 = -180/1120 - After reducing the fraction, the answer is -9/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/70-56/32 50/70-28/64 50/70-84/32 50/70-28/96