Subtract 30/35 from 3/28
3/28 - 30/35 is -3/4.
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,
3/28 = 3 × 5/28 × 5 = 15/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
30/35 = 30 × 4/35 × 4 = 120/140 - Subtract the two like fractions:
15/140 - 120/140 = 15 - 120/140 = -105/140 - After reducing the fraction, the answer is -3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/28-30/35 3/28-60/35 3/56-30/35 3/28-30/70 9/28-30/35 3/28-90/35 3/84-30/35 15/28-30/35 21/28-30/35