Subtract 28/35 from 9/84
9/84 - 28/35 is -97/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
9/84 = 9 × 5/84 × 5 = 45/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
28/35 = 28 × 12/35 × 12 = 336/420 - Subtract the two like fractions:
45/420 - 336/420 = 45 - 336/420 = -291/420 - After reducing the fraction, the answer is -97/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/84-28/35 9/84-56/35 9/84-28/70 27/84-28/35 9/84-84/35 45/84-28/35 63/84-28/35