Subtract 30/20 from 1/70
1st number: 1/70, 2nd number: 1 10/20
1/70 - 30/20 is -52/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
1/70 = 1 × 2/70 × 2 = 2/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
30/20 = 30 × 7/20 × 7 = 210/140 - Subtract the two like fractions:
2/140 - 210/140 = 2 - 210/140 = -208/140 - After reducing the fraction, the answer is -52/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/70-30/20 1/70-60/20 1/70-30/40 3/70-30/20 1/70-90/20 1/70-30/60 5/70-30/20 7/70-30/20