Subtract 16/6 from 20/45
1st number: 20/45, 2nd number: 2 4/6
20/45 - 16/6 is -20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 6 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
20/45 = 20 × 2/45 × 2 = 40/90 - Likewise, for the 2nd fraction, since 6 × 15 = 90,
16/6 = 16 × 15/6 × 15 = 240/90 - Subtract the two like fractions:
40/90 - 240/90 = 40 - 240/90 = -200/90 - After reducing the fraction, the answer is -20/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45-16/6 20/45-32/6 20/90-16/6 20/45-16/12 60/45-16/6 20/45-48/6 20/45-16/18 20/45-80/6 20/45-16/30 20/45-16/42