Subtract 42/54 from 50/45
1st number: 1 5/45, 2nd number: 42/54
50/45 - 42/54 is 1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 45 × 6 = 270,
50/45 = 50 × 6/45 × 6 = 300/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
42/54 = 42 × 5/54 × 5 = 210/270 - Subtract the two like fractions:
300/270 - 210/270 = 300 - 210/270 = 90/270 - After reducing the fraction, the answer is 1/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/45-84/54 50/90-42/54