Subtract 45/6 from 42/54
1st number: 42/54, 2nd number: 7 3/6
42/54 - 45/6 is -121/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 6 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
42/54 = 42 × 1/54 × 1 = 42/54 - Likewise, for the 2nd fraction, since 6 × 9 = 54,
45/6 = 45 × 9/6 × 9 = 405/54 - Subtract the two like fractions:
42/54 - 405/54 = 42 - 405/54 = -363/54 - After reducing the fraction, the answer is -121/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/54-45/6 42/54-90/6 42/54-45/12 42/54-45/18 42/54-45/30 42/54-45/42