Subtract 42/12 from 70/20
1st number: 3 10/20, 2nd number: 3 6/12
70/20 - 42/12 is 0/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
70/20 = 70 × 3/20 × 3 = 210/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60 - Subtract the two like fractions:
210/60 - 210/60 = 210 - 210/60 = 0/60 - The answer is 0
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20-84/12 70/40-42/12 70/20-42/24 70/60-42/12 70/20-42/36 70/20-42/60 70/20-42/84