Subtract 42/6 from 18/15
1st number: 1 3/15, 2nd number: 7 0/6
18/15 - 42/6 is -29/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
18/15 = 18 × 2/15 × 2 = 36/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
42/6 = 42 × 5/6 × 5 = 210/30 - Subtract the two like fractions:
36/30 - 210/30 = 36 - 210/30 = -174/30 - After reducing the fraction, the answer is -29/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15-42/6 18/15-84/6 18/30-42/6 18/15-42/12 54/15-42/6 18/45-42/6 18/15-42/18 90/15-42/6 18/75-42/6 18/15-42/30