Subtract 30/12 from 84/4
1st number: 21 0/4, 2nd number: 2 6/12
84/4 - 30/12 is 37/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
84/4 = 84 × 3/4 × 3 = 252/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
30/12 = 30 × 1/12 × 1 = 30/12 - Subtract the two like fractions:
252/12 - 30/12 = 252 - 30/12 = 222/12 - After reducing the fraction, the answer is 37/2
- In mixed form: 181/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-60/12 84/8-30/12 84/4-30/24 84/4-90/12 84/12-30/12 84/4-30/36 84/20-30/12 84/4-30/60 84/28-30/12 84/4-30/84