Subtract 36/21 from 54/8
1st number: 6 6/8, 2nd number: 1 15/21
54/8 - 36/21 is 141/28.
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,
54/8 = 54 × 21/8 × 21 = 1134/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
36/21 = 36 × 8/21 × 8 = 288/168 - Subtract the two like fractions:
1134/168 - 288/168 = 1134 - 288/168 = 846/168 - After reducing the fraction, the answer is 141/28
- In mixed form: 51/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/8-72/21 54/16-36/21 54/8-36/42 54/24-36/21 54/8-36/63 54/40-36/21 54/56-36/21