Subtract 27/70 from 6/40
6/40 - 27/70 is -33/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
6/40 = 6 × 7/40 × 7 = 42/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
27/70 = 27 × 4/70 × 4 = 108/280 - Subtract the two like fractions:
42/280 - 108/280 = 42 - 108/280 = -66/280 - After reducing the fraction, the answer is -33/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/40-27/70 6/40-54/70 6/80-27/70 18/40-27/70 6/40-81/70 30/40-27/70 42/40-27/70