Subtract 28/30 from 75/27
1st number: 2 21/27, 2nd number: 28/30
75/27 - 28/30 is 83/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 30 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
75/27 = 75 × 10/27 × 10 = 750/270 - Likewise, for the 2nd fraction, since 30 × 9 = 270,
28/30 = 28 × 9/30 × 9 = 252/270 - Subtract the two like fractions:
750/270 - 252/270 = 750 - 252/270 = 498/270 - After reducing the fraction, the answer is 83/45
- In mixed form: 138/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/27-56/30 75/54-28/30 75/27-28/60 75/27-84/30 75/81-28/30 75/27-28/90