Subtract 9/10 from 28/32
28/32 - 9/10 is -1/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 10 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 32 × 5 = 160,
28/32 = 28 × 5/32 × 5 = 140/160 - Likewise, for the 2nd fraction, since 10 × 16 = 160,
9/10 = 9 × 16/10 × 16 = 144/160 - Subtract the two like fractions:
140/160 - 144/160 = 140 - 144/160 = -4/160 - After reducing the fraction, the answer is -1/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/32-9/10 28/32-18/10 28/64-9/10 28/32-9/20 84/32-9/10 28/32-27/10 28/96-9/10 28/32-9/30 28/32-45/10 28/32-9/50 28/32-63/10 28/32-9/70