Subtract 42/30 from 42/9
1st number: 4 6/9, 2nd number: 1 12/30
42/9 - 42/30 is 49/15.
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,
42/30 = 42 × 3/30 × 3 = 126/90 - Subtract the two like fractions:
420/90 - 126/90 = 420 - 126/90 = 294/90 - After reducing the fraction, the answer is 49/15
- In mixed form: 34/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9-42/30 42/9-84/30 42/18-42/30 42/9-42/60 42/27-42/30 42/9-42/90 42/45-42/30 42/63-42/30