Subtract 5/84 from 18/8
1st number: 2 2/8, 2nd number: 5/84
18/8 - 5/84 is 46/21.
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,
18/8 = 18 × 21/8 × 21 = 378/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
5/84 = 5 × 2/84 × 2 = 10/168 - Subtract the two like fractions:
378/168 - 10/168 = 378 - 10/168 = 368/168 - After reducing the fraction, the answer is 46/21
- In mixed form: 24/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8-5/84 18/8-10/84 18/16-5/84 54/8-5/84 18/8-15/84 18/24-5/84 90/8-5/84 18/8-25/84 18/40-5/84 18/8-35/84 18/56-5/84