Subtract 20/45 from 16/8
1st number: 2 0/8, 2nd number: 20/45
16/8 - 20/45 is 14/9.
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,
16/8 = 16 × 45/8 × 45 = 720/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
20/45 = 20 × 8/45 × 8 = 160/360 - Subtract the two like fractions:
720/360 - 160/360 = 720 - 160/360 = 560/360 - After reducing the fraction, the answer is 14/9
- In mixed form: 15/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/8-20/45 16/8-40/45 16/8-20/90 48/8-20/45 16/8-60/45 16/24-20/45 80/8-20/45 16/40-20/45 16/56-20/45