Subtract 2/21 from 36/8
1st number: 4 4/8, 2nd number: 2/21
36/8 - 2/21 is 185/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
36/8 = 36 × 21/8 × 21 = 756/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
2/21 = 2 × 8/21 × 8 = 16/168 - Subtract the two like fractions:
756/168 - 16/168 = 756 - 16/168 = 740/168 - After reducing the fraction, the answer is 185/42
- In mixed form: 417/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/8-2/21 36/8-4/21 36/16-2/21 36/8-2/42 36/8-6/21 36/24-2/21 36/8-2/63 36/8-10/21 36/40-2/21 36/8-14/21 36/56-2/21