Subtract 14/5 from 42/18
1st number: 2 6/18, 2nd number: 2 4/5
42/18 - 14/5 is -7/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
42/18 = 42 × 5/18 × 5 = 210/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
14/5 = 14 × 18/5 × 18 = 252/90 - Subtract the two like fractions:
210/90 - 252/90 = 210 - 252/90 = -42/90 - After reducing the fraction, the answer is -7/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18-14/5 42/18-28/5 42/36-14/5 42/18-14/10 42/18-42/5 42/54-14/5 42/18-14/15 42/18-70/5 42/90-14/5 42/18-14/25 42/18-98/5 42/18-14/35