Subtract 4/84 from 28/35
28/35 - 4/84 is 79/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
28/35 = 28 × 12/35 × 12 = 336/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
4/84 = 4 × 5/84 × 5 = 20/420 - Subtract the two like fractions:
336/420 - 20/420 = 336 - 20/420 = 316/420 - After reducing the fraction, the answer is 79/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/35-4/84 28/35-8/84 28/70-4/84 84/35-4/84 28/35-12/84 28/35-20/84 28/35-28/84