Subtract 36/70 from 12/20
12/20 - 36/70 is 3/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
12/20 = 12 × 7/20 × 7 = 84/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
36/70 = 36 × 2/70 × 2 = 72/140 - Subtract the two like fractions:
84/140 - 72/140 = 84 - 72/140 = 12/140 - After reducing the fraction, the answer is 3/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20-36/70 12/20-72/70 12/40-36/70 36/20-36/70 12/60-36/70 60/20-36/70 84/20-36/70