Subtract 42/28 from 1/40
1st number: 1/40, 2nd number: 1 14/28
1/40 - 42/28 is -59/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
1/40 = 1 × 7/40 × 7 = 7/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
42/28 = 42 × 10/28 × 10 = 420/280 - Subtract the two like fractions:
7/280 - 420/280 = 7 - 420/280 = -413/280 - After reducing the fraction, the answer is -59/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/40-42/28 1/40-84/28 1/80-42/28 1/40-42/56 3/40-42/28 1/40-42/84 5/40-42/28 7/40-42/28