Subtract 12/70 from 10/20
10/20 - 12/70 is 23/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
10/20 = 10 × 7/20 × 7 = 70/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
12/70 = 12 × 2/70 × 2 = 24/140 - Subtract the two like fractions:
70/140 - 24/140 = 70 - 24/140 = 46/140 - After reducing the fraction, the answer is 23/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20-24/70 10/40-12/70 30/20-12/70 10/20-36/70 10/60-12/70 50/20-12/70 10/20-60/70 70/20-12/70 10/20-84/70