Subtract 2/84 from 28/30
28/30 - 2/84 is 191/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
28/30 = 28 × 14/30 × 14 = 392/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
2/84 = 2 × 5/84 × 5 = 10/420 - Subtract the two like fractions:
392/420 - 10/420 = 392 - 10/420 = 382/420 - After reducing the fraction, the answer is 191/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30-2/84 28/30-4/84 28/60-2/84 84/30-2/84 28/30-6/84 28/90-2/84 28/30-10/84 28/30-14/84