Subtract 45/18 from 84/2
1st number: 42 0/2, 2nd number: 2 9/18
84/2 - 45/18 is 79/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
84/2 = 84 × 9/2 × 9 = 756/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
45/18 = 45 × 1/18 × 1 = 45/18 - Subtract the two like fractions:
756/18 - 45/18 = 756 - 45/18 = 711/18 - After reducing the fraction, the answer is 79/2
- In mixed form: 391/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2-90/18 84/4-45/18 84/2-45/36 84/6-45/18 84/2-45/54 84/10-45/18 84/2-45/90 84/14-45/18