Subtract 7/15 from 35/84
35/84 - 7/15 is -1/20.
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,
35/84 = 35 × 5/84 × 5 = 175/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
7/15 = 7 × 28/15 × 28 = 196/420 - Subtract the two like fractions:
175/420 - 196/420 = 175 - 196/420 = -21/420 - After reducing the fraction, the answer is -1/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84-7/15 35/84-14/15 35/84-7/30 35/84-21/15 35/84-7/45 35/84-35/15 35/84-7/75 35/84-49/15