Subtract 42/27 from 72/45
1st number: 1 27/45, 2nd number: 1 15/27
72/45 - 42/27 is 2/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 45 × 3 = 135,
72/45 = 72 × 3/45 × 3 = 216/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
42/27 = 42 × 5/27 × 5 = 210/135 - Subtract the two like fractions:
216/135 - 210/135 = 216 - 210/135 = 6/135 - After reducing the fraction, the answer is 2/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/45-84/27 72/90-42/27 72/45-42/54 72/45-42/81