Subtract 8/84 from 10/30
10/30 - 8/84 is 5/21.
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,
10/30 = 10 × 14/30 × 14 = 140/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
8/84 = 8 × 5/84 × 5 = 40/420 - Subtract the two like fractions:
140/420 - 40/420 = 140 - 40/420 = 100/420 - After reducing the fraction, the answer is 5/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/30-8/84 10/30-16/84 10/60-8/84 10/30-24/84 10/90-8/84 50/30-8/84 10/30-40/84 70/30-8/84 10/30-56/84