Subtract 42/6 from 40/15
1st number: 2 10/15, 2nd number: 7 0/6
40/15 - 42/6 is -13/3.
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,
40/15 = 40 × 2/15 × 2 = 80/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
42/6 = 42 × 5/6 × 5 = 210/30 - Subtract the two like fractions:
80/30 - 210/30 = 80 - 210/30 = -130/30 - After reducing the fraction, the answer is -13/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15-42/6 40/15-84/6 40/30-42/6 40/15-42/12 40/45-42/6 40/15-42/18 40/75-42/6 40/15-42/30