Subtract 50/30 from 1/70
1st number: 1/70, 2nd number: 1 20/30
1/70 - 50/30 is -347/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
1/70 = 1 × 3/70 × 3 = 3/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
50/30 = 50 × 7/30 × 7 = 350/210 - Subtract the two like fractions:
3/210 - 350/210 = 3 - 350/210 = -347/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/70-50/30 1/70-50/60 3/70-50/30 1/70-50/90 5/70-50/30 7/70-50/30