Subtract 42/80 from 42/9
1st number: 4 6/9, 2nd number: 42/80
42/9 - 42/80 is 497/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 9 × 80 = 720,
42/9 = 42 × 80/9 × 80 = 3360/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
42/80 = 42 × 9/80 × 9 = 378/720 - Subtract the two like fractions:
3360/720 - 378/720 = 3360 - 378/720 = 2982/720 - After reducing the fraction, the answer is 497/120
- In mixed form: 417/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9-42/80 42/9-84/80 42/18-42/80 42/27-42/80 42/45-42/80 42/63-42/80