Subtract 3/35 from 30/28
1st number: 1 2/28, 2nd number: 3/35
30/28 - 3/35 is 69/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
30/28 = 30 × 5/28 × 5 = 150/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
3/35 = 3 × 4/35 × 4 = 12/140 - Subtract the two like fractions:
150/140 - 12/140 = 150 - 12/140 = 138/140 - After reducing the fraction, the answer is 69/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28-3/35 30/28-6/35 30/56-3/35 30/28-3/70 90/28-3/35 30/28-9/35 30/84-3/35 30/28-15/35 30/28-21/35