Subtract 20/70 from 28/35
28/35 - 20/70 is 18/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 35 × 2 = 70,
28/35 = 28 × 2/35 × 2 = 56/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
20/70 = 20 × 1/70 × 1 = 20/70 - Subtract the two like fractions:
56/70 - 20/70 = 56 - 20/70 = 36/70 - After reducing the fraction, the answer is 18/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/35-20/70 28/35-40/70 28/70-20/70 84/35-20/70 28/35-60/70