Subtract 15/90 from 28/4
1st number: 7 0/4, 2nd number: 15/90
28/4 - 15/90 is 41/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
28/4 = 28 × 45/4 × 45 = 1260/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
15/90 = 15 × 2/90 × 2 = 30/180 - Subtract the two like fractions:
1260/180 - 30/180 = 1260 - 30/180 = 1230/180 - After reducing the fraction, the answer is 41/6
- In mixed form: 65/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/4-15/90 28/4-30/90 28/8-15/90 84/4-15/90 28/4-45/90 28/12-15/90 28/4-75/90 28/20-15/90