Subtract 60/70 from 20/12
1st number: 1 8/12, 2nd number: 60/70
20/12 - 60/70 is 17/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
20/12 = 20 × 35/12 × 35 = 700/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
60/70 = 60 × 6/70 × 6 = 360/420 - Subtract the two like fractions:
700/420 - 360/420 = 700 - 360/420 = 340/420 - After reducing the fraction, the answer is 17/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12-60/70 20/24-60/70 60/12-60/70 20/36-60/70 20/60-60/70 20/84-60/70