Subtract 42/80 from 20/6
1st number: 3 2/6, 2nd number: 42/80
20/6 - 42/80 is 337/120.
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,
20/6 = 20 × 40/6 × 40 = 800/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
42/80 = 42 × 3/80 × 3 = 126/240 - Subtract the two like fractions:
800/240 - 126/240 = 800 - 126/240 = 674/240 - After reducing the fraction, the answer is 337/120
- In mixed form: 297/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/6-42/80 20/6-84/80 20/12-42/80 60/6-42/80 20/18-42/80 20/30-42/80 20/42-42/80