Subtract 18/30 from 35/28
1st number: 1 7/28, 2nd number: 18/30
35/28 - 18/30 is 13/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
35/28 = 35 × 15/28 × 15 = 525/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
18/30 = 18 × 14/30 × 14 = 252/420 - Subtract the two like fractions:
525/420 - 252/420 = 525 - 252/420 = 273/420 - After reducing the fraction, the answer is 13/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/28-18/30 35/28-36/30 35/56-18/30 35/28-18/60 35/28-54/30 35/84-18/30 35/28-18/90 35/28-90/30