Subtract 42/5 from 1/40
1st number: 1/40, 2nd number: 8 2/5
1/40 - 42/5 is -67/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
1/40 = 1 × 1/40 × 1 = 1/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
42/5 = 42 × 8/5 × 8 = 336/40 - Subtract the two like fractions:
1/40 - 336/40 = 1 - 336/40 = -335/40 - After reducing the fraction, the answer is -67/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/40-42/5 1/40-84/5 1/80-42/5 1/40-42/10 3/40-42/5 1/40-42/15 5/40-42/5 1/40-42/25 7/40-42/5 1/40-42/35