Subtract 1/45 from 20/8
1st number: 2 4/8, 2nd number: 1/45
20/8 - 1/45 is 223/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
20/8 = 20 × 45/8 × 45 = 900/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
1/45 = 1 × 8/45 × 8 = 8/360 - Subtract the two like fractions:
900/360 - 8/360 = 900 - 8/360 = 892/360 - After reducing the fraction, the answer is 223/90
- In mixed form: 243/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/8-1/45 20/8-2/45 20/16-1/45 20/8-1/90 60/8-1/45 20/8-3/45 20/24-1/45 20/8-5/45 20/40-1/45 20/8-7/45 20/56-1/45