Subtract 30/70 from 70/50
1st number: 1 20/50, 2nd number: 30/70
70/50 - 30/70 is 34/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 50 × 7 = 350,
70/50 = 70 × 7/50 × 7 = 490/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
30/70 = 30 × 5/70 × 5 = 150/350 - Subtract the two like fractions:
490/350 - 150/350 = 490 - 150/350 = 340/350 - After reducing the fraction, the answer is 34/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/50-60/70 70/50-90/70