Subtract 18/32 from 28/45
28/45 - 18/32 is 43/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 32 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 45 × 32 = 1440,
28/45 = 28 × 32/45 × 32 = 896/1440 - Likewise, for the 2nd fraction, since 32 × 45 = 1440,
18/32 = 18 × 45/32 × 45 = 810/1440 - Subtract the two like fractions:
896/1440 - 810/1440 = 896 - 810/1440 = 86/1440 - After reducing the fraction, the answer is 43/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45-18/32 28/45-36/32 28/90-18/32 28/45-18/64 84/45-18/32 28/45-54/32 28/45-18/96 28/45-90/32