Subtract 1/9 from 42/30
1st number: 1 12/30, 2nd number: 1/9
42/30 - 1/9 is 58/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
42/30 = 42 × 3/30 × 3 = 126/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
1/9 = 1 × 10/9 × 10 = 10/90 - Subtract the two like fractions:
126/90 - 10/90 = 126 - 10/90 = 116/90 - After reducing the fraction, the answer is 58/45
- In mixed form: 113/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30-1/9 42/30-2/9 42/60-1/9 42/30-1/18 42/30-3/9 42/90-1/9 42/30-1/27 42/30-5/9 42/30-1/45 42/30-7/9 42/30-1/63