Subtract 50/90 from 28/12
1st number: 2 4/12, 2nd number: 50/90
28/12 - 50/90 is 16/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
28/12 = 28 × 15/12 × 15 = 420/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
50/90 = 50 × 2/90 × 2 = 100/180 - Subtract the two like fractions:
420/180 - 100/180 = 420 - 100/180 = 320/180 - After reducing the fraction, the answer is 16/9
- In mixed form: 17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12-50/90 28/24-50/90 84/12-50/90 28/36-50/90 28/60-50/90 28/84-50/90