Subtract 1/10 from 18/8
1st number: 2 2/8, 2nd number: 1/10
18/8 - 1/10 is 43/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
18/8 = 18 × 5/8 × 5 = 90/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
1/10 = 1 × 4/10 × 4 = 4/40 - Subtract the two like fractions:
90/40 - 4/40 = 90 - 4/40 = 86/40 - After reducing the fraction, the answer is 43/20
- In mixed form: 23/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8-1/10 18/8-2/10 18/16-1/10 18/8-1/20 54/8-1/10 18/8-3/10 18/24-1/10 18/8-1/30 90/8-1/10 18/8-5/10 18/40-1/10 18/8-1/50 18/8-7/10 18/56-1/10 18/8-1/70