Subtract 5/45 from 27/42
27/42 - 5/45 is 67/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
27/42 = 27 × 15/42 × 15 = 405/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
5/45 = 5 × 14/45 × 14 = 70/630 - Subtract the two like fractions:
405/630 - 70/630 = 405 - 70/630 = 335/630 - After reducing the fraction, the answer is 67/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-5/45 27/42-10/45 27/84-5/45 27/42-5/90 81/42-5/45 27/42-15/45 27/42-25/45 27/42-35/45