Subtract 12/30 from 84/28
1st number: 3 0/28, 2nd number: 12/30
84/28 - 12/30 is 13/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
84/28 = 84 × 15/28 × 15 = 1260/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
12/30 = 12 × 14/30 × 14 = 168/420 - Subtract the two like fractions:
1260/420 - 168/420 = 1260 - 168/420 = 1092/420 - After reducing the fraction, the answer is 13/5
- In mixed form: 23/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28-24/30 84/56-12/30 84/28-12/60 84/28-36/30 84/28-12/90 84/28-60/30 84/28-84/30