Subtract 25/7 from 70/20
1st number: 3 10/20, 2nd number: 3 4/7
70/20 - 25/7 is -1/14.
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,
25/7 = 25 × 20/7 × 20 = 500/140 - Subtract the two like fractions:
490/140 - 500/140 = 490 - 500/140 = -10/140 - After reducing the fraction, the answer is -1/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20-50/7 70/40-25/7 70/20-25/14 70/20-75/7 70/60-25/7 70/20-25/21 70/20-25/35 70/20-25/49