Subtract 21/8 from 80/2
1st number: 40 0/2, 2nd number: 2 5/8
80/2 - 21/8 is 299/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 2 × 4 = 8,
80/2 = 80 × 4/2 × 4 = 320/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
21/8 = 21 × 1/8 × 1 = 21/8 - Subtract the two like fractions:
320/8 - 21/8 = 320 - 21/8 = 299/8 - In mixed form: 373/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/2-42/8 80/4-21/8 80/2-21/16 80/2-63/8 80/6-21/8 80/2-21/24 80/10-21/8 80/2-21/40 80/14-21/8 80/2-21/56