Subtract 2/30 from 42/9
1st number: 4 6/9, 2nd number: 2/30
42/9 - 2/30 is 23/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
42/9 = 42 × 10/9 × 10 = 420/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
2/30 = 2 × 3/30 × 3 = 6/90 - Subtract the two like fractions:
420/90 - 6/90 = 420 - 6/90 = 414/90 - After reducing the fraction, the answer is 23/5
- In mixed form: 43/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9-2/30 42/9-4/30 42/18-2/30 42/9-2/60 42/9-6/30 42/27-2/30 42/9-2/90 42/9-10/30 42/45-2/30 42/9-14/30 42/63-2/30