Subtract 42/9 from 30/4
1st number: 7 2/4, 2nd number: 4 6/9
30/4 - 42/9 is 17/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
30/4 = 30 × 9/4 × 9 = 270/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
42/9 = 42 × 4/9 × 4 = 168/36 - Subtract the two like fractions:
270/36 - 168/36 = 270 - 168/36 = 102/36 - After reducing the fraction, the answer is 17/6
- In mixed form: 25/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/4-42/9 30/4-84/9 30/8-42/9 30/4-42/18 90/4-42/9 30/12-42/9 30/4-42/27 30/20-42/9 30/4-42/45 30/28-42/9 30/4-42/63