Subtract 30/8 from 42/6
1st number: 7 0/6, 2nd number: 3 6/8
42/6 - 30/8 is 13/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 6 × 4 = 24,
42/6 = 42 × 4/6 × 4 = 168/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
30/8 = 30 × 3/8 × 3 = 90/24 - Subtract the two like fractions:
168/24 - 90/24 = 168 - 90/24 = 78/24 - After reducing the fraction, the answer is 13/4
- In mixed form: 31/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/6-30/8 42/6-60/8 42/12-30/8 42/6-30/16 42/6-90/8 42/18-30/8 42/6-30/24 42/30-30/8 42/6-30/40 42/6-30/56