Subtract 9/45 from 84/4
1st number: 21 0/4, 2nd number: 9/45
84/4 - 9/45 is 104/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
84/4 = 84 × 45/4 × 45 = 3780/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
9/45 = 9 × 4/45 × 4 = 36/180 - Subtract the two like fractions:
3780/180 - 36/180 = 3780 - 36/180 = 3744/180 - After reducing the fraction, the answer is 104/5
- In mixed form: 204/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-18/45 84/8-9/45 84/4-9/90 84/4-27/45 84/12-9/45 84/20-9/45 84/4-63/45 84/28-9/45