Subtract 30/8 from 12/2
1st number: 6 0/2, 2nd number: 3 6/8
12/2 - 30/8 is 9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 2 × 4 = 8,
12/2 = 12 × 4/2 × 4 = 48/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
30/8 = 30 × 1/8 × 1 = 30/8 - Subtract the two like fractions:
48/8 - 30/8 = 48 - 30/8 = 18/8 - After reducing the fraction, the answer is 9/4
- In mixed form: 21/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/2-30/8 12/2-60/8 12/4-30/8 12/2-30/16 36/2-30/8 12/2-90/8 12/6-30/8 12/2-30/24 60/2-30/8 12/10-30/8 12/2-30/40 84/2-30/8 12/14-30/8 12/2-30/56