Subtract 15/84 from 4/10
4/10 - 15/84 is 31/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 10 × 42 = 420,
4/10 = 4 × 42/10 × 42 = 168/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
15/84 = 15 × 5/84 × 5 = 75/420 - Subtract the two like fractions:
168/420 - 75/420 = 168 - 75/420 = 93/420 - After reducing the fraction, the answer is 31/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/10-15/84 4/10-30/84 4/20-15/84 12/10-15/84 4/10-45/84 4/30-15/84 20/10-15/84 4/10-75/84 4/50-15/84 28/10-15/84 4/70-15/84