Subtract 18/5 from 42/14
1st number: 3 0/14, 2nd number: 3 3/5
42/14 - 18/5 is -3/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 5 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 14 × 5 = 70,
42/14 = 42 × 5/14 × 5 = 210/70 - Likewise, for the 2nd fraction, since 5 × 14 = 70,
18/5 = 18 × 14/5 × 14 = 252/70 - Subtract the two like fractions:
210/70 - 252/70 = 210 - 252/70 = -42/70 - After reducing the fraction, the answer is -3/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/14-18/5 42/14-36/5 42/28-18/5 42/14-18/10 42/14-54/5 42/14-18/15 42/14-90/5 42/70-18/5 42/14-18/25 42/98-18/5 42/14-18/35