Subtract 70/15 from 15/84
1st number: 15/84, 2nd number: 4 10/15
15/84 - 70/15 is -377/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
15/84 = 15 × 5/84 × 5 = 75/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
70/15 = 70 × 28/15 × 28 = 1960/420 - Subtract the two like fractions:
75/420 - 1960/420 = 75 - 1960/420 = -1885/420 - After reducing the fraction, the answer is -377/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/84-70/15 15/84-70/30 45/84-70/15 15/84-70/45 75/84-70/15 15/84-70/75