Subtract 1/70 from 20/35
20/35 - 1/70 is 39/70.
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,
20/35 = 20 × 2/35 × 2 = 40/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
1/70 = 1 × 1/70 × 1 = 1/70 - Subtract the two like fractions:
40/70 - 1/70 = 40 - 1/70 = 39/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/35-1/70 20/35-2/70 20/70-1/70 60/35-1/70 20/35-3/70 20/35-5/70 20/35-7/70