Subtract 50/70 from 1/3
1/3 - 50/70 is -8/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 3 × 70 = 210,
1/3 = 1 × 70/3 × 70 = 70/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
50/70 = 50 × 3/70 × 3 = 150/210 - Subtract the two like fractions:
70/210 - 150/210 = 70 - 150/210 = -80/210 - After reducing the fraction, the answer is -8/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/3-50/70 1/6-50/70 1/9-50/70 5/3-50/70 1/15-50/70 7/3-50/70 1/21-50/70