Subtract 4/10 from 27/84
27/84 - 4/10 is -11/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
27/84 = 27 × 5/84 × 5 = 135/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
4/10 = 4 × 42/10 × 42 = 168/420 - Subtract the two like fractions:
135/420 - 168/420 = 135 - 168/420 = -33/420 - After reducing the fraction, the answer is -11/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/84-4/10 27/84-8/10 27/84-4/20 81/84-4/10 27/84-12/10 27/84-4/30 27/84-20/10 27/84-4/50 27/84-28/10 27/84-4/70