Subtract 45/4 from 84/18
1st number: 4 12/18, 2nd number: 11 1/4
84/18 - 45/4 is -79/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
84/18 = 84 × 2/18 × 2 = 168/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
45/4 = 45 × 9/4 × 9 = 405/36 - Subtract the two like fractions:
168/36 - 405/36 = 168 - 405/36 = -237/36 - After reducing the fraction, the answer is -79/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18-90/4 84/36-45/4 84/18-45/8 84/54-45/4 84/18-45/12 84/90-45/4 84/18-45/20 84/18-45/28