Subtract 28/45 from 18/4
1st number: 4 2/4, 2nd number: 28/45
18/4 - 28/45 is 349/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
18/4 = 18 × 45/4 × 45 = 810/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
28/45 = 28 × 4/45 × 4 = 112/180 - Subtract the two like fractions:
810/180 - 112/180 = 810 - 112/180 = 698/180 - After reducing the fraction, the answer is 349/90
- In mixed form: 379/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4-28/45 18/4-56/45 18/8-28/45 18/4-28/90 54/4-28/45 18/4-84/45 18/12-28/45 90/4-28/45 18/20-28/45 18/28-28/45