Subtract 18/4 from 14/90
1st number: 14/90, 2nd number: 4 2/4
14/90 - 18/4 is -391/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
14/90 = 14 × 2/90 × 2 = 28/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
18/4 = 18 × 45/4 × 45 = 810/180 - Subtract the two like fractions:
28/180 - 810/180 = 28 - 810/180 = -782/180 - After reducing the fraction, the answer is -391/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/90-18/4 14/90-36/4 14/90-18/8 42/90-18/4 14/90-54/4 14/90-18/12 70/90-18/4 14/90-90/4 14/90-18/20 98/90-18/4 14/90-18/28