Subtract 1/7 from 25/40
25/40 - 1/7 is 27/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
25/40 = 25 × 7/40 × 7 = 175/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
1/7 = 1 × 40/7 × 40 = 40/280 - Subtract the two like fractions:
175/280 - 40/280 = 175 - 40/280 = 135/280 - After reducing the fraction, the answer is 27/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/40-1/7 25/40-2/7 25/80-1/7 25/40-1/14 75/40-1/7 25/40-3/7 25/40-1/21 25/40-5/7 25/40-1/35 25/40-1/49