Subtract 42/84 from 49/18
1st number: 2 13/18, 2nd number: 42/84
49/18 - 42/84 is 20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
49/18 = 49 × 14/18 × 14 = 686/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
42/84 = 42 × 3/84 × 3 = 126/252 - Subtract the two like fractions:
686/252 - 126/252 = 686 - 126/252 = 560/252 - After reducing the fraction, the answer is 20/9
- In mixed form: 22/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/18-42/84 49/36-42/84 49/54-42/84 49/90-42/84