Subtract 15/3 from 3/42
1st number: 3/42, 2nd number: 5 0/3
3/42 - 15/3 is -69/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 3 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
3/42 = 3 × 1/42 × 1 = 3/42 - Likewise, for the 2nd fraction, since 3 × 14 = 42,
15/3 = 15 × 14/3 × 14 = 210/42 - Subtract the two like fractions:
3/42 - 210/42 = 3 - 210/42 = -207/42 - After reducing the fraction, the answer is -69/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42-15/3 3/42-30/3 3/84-15/3 3/42-15/6 9/42-15/3 3/42-45/3 3/42-15/9 15/42-15/3 3/42-75/3 21/42-15/3 3/42-15/21