Subtract 49/45 from 42/18
1st number: 2 6/18, 2nd number: 1 4/45
42/18 - 49/45 is 56/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
42/18 = 42 × 5/18 × 5 = 210/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
49/45 = 49 × 2/45 × 2 = 98/90 - Subtract the two like fractions:
210/90 - 98/90 = 210 - 98/90 = 112/90 - After reducing the fraction, the answer is 56/45
- In mixed form: 111/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18-49/45 42/18-98/45 42/36-49/45 42/18-49/90 42/54-49/45 42/90-49/45