Subtract 10/20 from 12/35
12/35 - 10/20 is -11/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 35 × 4 = 140,
12/35 = 12 × 4/35 × 4 = 48/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
10/20 = 10 × 7/20 × 7 = 70/140 - Subtract the two like fractions:
48/140 - 70/140 = 48 - 70/140 = -22/140 - After reducing the fraction, the answer is -11/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/35-10/20 12/70-10/20 12/35-10/40 36/35-10/20 12/35-30/20 12/35-10/60 60/35-10/20 12/35-50/20 84/35-10/20 12/35-70/20