Subtract 28/20 from 60/70
1st number: 60/70, 2nd number: 1 8/20
60/70 - 28/20 is -19/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
60/70 = 60 × 2/70 × 2 = 120/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
28/20 = 28 × 7/20 × 7 = 196/140 - Subtract the two like fractions:
120/140 - 196/140 = 120 - 196/140 = -76/140 - After reducing the fraction, the answer is -19/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70-56/20 60/70-28/40 60/70-84/20 60/70-28/60