Subtract 20/80 from 30/6
1st number: 5 0/6, 2nd number: 20/80
30/6 - 20/80 is 19/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 6 × 40 = 240,
30/6 = 30 × 40/6 × 40 = 1200/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
20/80 = 20 × 3/80 × 3 = 60/240 - Subtract the two like fractions:
1200/240 - 60/240 = 1200 - 60/240 = 1140/240 - After reducing the fraction, the answer is 19/4
- In mixed form: 43/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/6-20/80 30/6-40/80 30/12-20/80 90/6-20/80 30/6-60/80 30/18-20/80 30/42-20/80