Subtract 36/70 from 3/12
3/12 - 36/70 is -37/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
3/12 = 3 × 35/12 × 35 = 105/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
36/70 = 36 × 6/70 × 6 = 216/420 - Subtract the two like fractions:
105/420 - 216/420 = 105 - 216/420 = -111/420 - After reducing the fraction, the answer is -37/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-36/70 3/12-72/70 3/24-36/70 9/12-36/70 3/36-36/70 15/12-36/70 3/60-36/70 21/12-36/70 3/84-36/70