Subtract 15/3 from 30/84
1st number: 30/84, 2nd number: 5 0/3
30/84 - 15/3 is -65/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 3 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
30/84 = 30 × 1/84 × 1 = 30/84 - Likewise, for the 2nd fraction, since 3 × 28 = 84,
15/3 = 15 × 28/3 × 28 = 420/84 - Subtract the two like fractions:
30/84 - 420/84 = 30 - 420/84 = -390/84 - After reducing the fraction, the answer is -65/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84-15/3 30/84-30/3 30/84-15/6 90/84-15/3 30/84-45/3 30/84-15/9 30/84-75/3 30/84-15/21