Subtract 3/90 from 15/4
1st number: 3 3/4, 2nd number: 3/90
15/4 - 3/90 is 223/60.
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,
15/4 = 15 × 45/4 × 45 = 675/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
3/90 = 3 × 2/90 × 2 = 6/180 - Subtract the two like fractions:
675/180 - 6/180 = 675 - 6/180 = 669/180 - After reducing the fraction, the answer is 223/60
- In mixed form: 343/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4-3/90 15/4-6/90 15/8-3/90 45/4-3/90 15/4-9/90 15/12-3/90 75/4-3/90 15/4-15/90 15/20-3/90 15/4-21/90 15/28-3/90