Subtract 28/35 from 27/30
27/30 - 28/35 is 1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
27/30 = 27 × 7/30 × 7 = 189/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
28/35 = 28 × 6/35 × 6 = 168/210 - Subtract the two like fractions:
189/210 - 168/210 = 189 - 168/210 = 21/210 - After reducing the fraction, the answer is 1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30-28/35 27/30-56/35 27/60-28/35 27/30-28/70 81/30-28/35 27/30-84/35 27/90-28/35