Subtract 45/3 from 21/14
1st number: 1 7/14, 2nd number: 15 0/3
21/14 - 45/3 is -27/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 3 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
21/14 = 21 × 3/14 × 3 = 63/42 - Likewise, for the 2nd fraction, since 3 × 14 = 42,
45/3 = 45 × 14/3 × 14 = 630/42 - Subtract the two like fractions:
63/42 - 630/42 = 63 - 630/42 = -567/42 - After reducing the fraction, the answer is -27/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14-45/3 21/14-90/3 21/28-45/3 21/14-45/6 63/14-45/3 21/42-45/3 21/14-45/9 21/70-45/3 21/14-45/15 21/98-45/3 21/14-45/21