Subtract 42/9 from 75/40
1st number: 1 35/40, 2nd number: 4 6/9
75/40 - 42/9 is -67/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
75/40 = 75 × 9/40 × 9 = 675/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
42/9 = 42 × 40/9 × 40 = 1680/360 - Subtract the two like fractions:
675/360 - 1680/360 = 675 - 1680/360 = -1005/360 - After reducing the fraction, the answer is -67/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/40-84/9 75/80-42/9 75/40-42/18 75/40-42/27 75/40-42/45 75/40-42/63