Subtract 12/45 from 72/28
1st number: 2 16/28, 2nd number: 12/45
72/28 - 12/45 is 242/105.
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,
72/28 = 72 × 45/28 × 45 = 3240/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
12/45 = 12 × 28/45 × 28 = 336/1260 - Subtract the two like fractions:
3240/1260 - 336/1260 = 3240 - 336/1260 = 2904/1260 - After reducing the fraction, the answer is 242/105
- In mixed form: 232/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28-24/45 72/56-12/45 72/28-12/90 72/28-36/45 72/84-12/45 72/28-60/45 72/28-84/45