Subtract 12/84 from 9/4
1st number: 2 1/4, 2nd number: 12/84
9/4 - 12/84 is 59/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
9/4 = 9 × 21/4 × 21 = 189/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
12/84 = 12 × 1/84 × 1 = 12/84 - Subtract the two like fractions:
189/84 - 12/84 = 189 - 12/84 = 177/84 - After reducing the fraction, the answer is 59/28
- In mixed form: 23/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/4-12/84 9/4-24/84 9/8-12/84 27/4-12/84 9/4-36/84 9/12-12/84 45/4-12/84 9/4-60/84 9/20-12/84 63/4-12/84 9/28-12/84