Subtract 9/45 from 12/28
12/28 - 9/45 is 8/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
12/28 = 12 × 45/28 × 45 = 540/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
9/45 = 9 × 28/45 × 28 = 252/1260 - Subtract the two like fractions:
540/1260 - 252/1260 = 540 - 252/1260 = 288/1260 - After reducing the fraction, the answer is 8/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28-9/45 12/28-18/45 12/56-9/45 12/28-9/90 36/28-9/45 12/28-27/45 12/84-9/45 60/28-9/45 84/28-9/45 12/28-63/45