Subtract 42/30 from 42/2
1st number: 21 0/2, 2nd number: 1 12/30
42/2 - 42/30 is 98/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 2 × 15 = 30,
42/2 = 42 × 15/2 × 15 = 630/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Subtract the two like fractions:
630/30 - 42/30 = 630 - 42/30 = 588/30 - After reducing the fraction, the answer is 98/5
- In mixed form: 193/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2-42/30 42/2-84/30 42/4-42/30 42/2-42/60 42/6-42/30 42/2-42/90 42/10-42/30 42/14-42/30