Subtract 30/9 from 42/4
1st number: 10 2/4, 2nd number: 3 3/9
42/4 - 30/9 is 43/6.
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,
42/4 = 42 × 9/4 × 9 = 378/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
30/9 = 30 × 4/9 × 4 = 120/36 - Subtract the two like fractions:
378/36 - 120/36 = 378 - 120/36 = 258/36 - After reducing the fraction, the answer is 43/6
- In mixed form: 71/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-30/9 42/4-60/9 42/8-30/9 42/4-30/18 42/4-90/9 42/12-30/9 42/4-30/27 42/20-30/9 42/4-30/45 42/28-30/9 42/4-30/63