Subtract 42/7 from 75/9
1st number: 8 3/9, 2nd number: 6 0/7
75/9 - 42/7 is 7/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
75/9 = 75 × 7/9 × 7 = 525/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
42/7 = 42 × 9/7 × 9 = 378/63 - Subtract the two like fractions:
525/63 - 378/63 = 525 - 378/63 = 147/63 - After reducing the fraction, the answer is 7/3
- In mixed form: 21/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/9-84/7 75/18-42/7 75/9-42/14 75/27-42/7 75/9-42/21 75/45-42/7 75/9-42/35 75/63-42/7 75/9-42/49