Subtract 36/21 from 5/8
1st number: 5/8, 2nd number: 1 15/21
5/8 - 36/21 is -61/56.
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,
5/8 = 5 × 21/8 × 21 = 105/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
36/21 = 36 × 8/21 × 8 = 288/168 - Subtract the two like fractions:
105/168 - 288/168 = 105 - 288/168 = -183/168 - After reducing the fraction, the answer is -61/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/8-36/21 5/8-72/21 5/16-36/21 5/8-36/42 15/8-36/21 5/24-36/21 5/8-36/63 25/8-36/21 5/40-36/21 35/8-36/21 5/56-36/21