Subtract 14/7 from 70/20
1st number: 3 10/20, 2nd number: 2 0/7
70/20 - 14/7 is 3/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
70/20 = 70 × 7/20 × 7 = 490/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
14/7 = 14 × 20/7 × 20 = 280/140 - Subtract the two like fractions:
490/140 - 280/140 = 490 - 280/140 = 210/140 - After reducing the fraction, the answer is 3/2
- In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20-28/7 70/40-14/7 70/20-42/7 70/60-14/7 70/20-14/21 70/20-70/7 70/20-14/35 70/20-98/7 70/20-14/49