Subtract 1/40 from 42/9
1st number: 4 6/9, 2nd number: 1/40
42/9 - 1/40 is 557/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
42/9 = 42 × 40/9 × 40 = 1680/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
1/40 = 1 × 9/40 × 9 = 9/360 - Subtract the two like fractions:
1680/360 - 9/360 = 1680 - 9/360 = 1671/360 - After reducing the fraction, the answer is 557/120
- In mixed form: 477/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9-1/40 42/9-2/40 42/18-1/40 42/9-1/80 42/9-3/40 42/27-1/40 42/9-5/40 42/45-1/40 42/9-7/40 42/63-1/40