Subtract 4/84 from 30/8
1st number: 3 6/8, 2nd number: 4/84
30/8 - 4/84 is 311/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
30/8 = 30 × 21/8 × 21 = 630/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
4/84 = 4 × 2/84 × 2 = 8/168 - Subtract the two like fractions:
630/168 - 8/168 = 630 - 8/168 = 622/168 - After reducing the fraction, the answer is 311/84
- In mixed form: 359/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/8-4/84 30/8-8/84 30/16-4/84 90/8-4/84 30/8-12/84 30/24-4/84 30/8-20/84 30/40-4/84 30/8-28/84 30/56-4/84