Subtract 12/8 from 25/30
1st number: 25/30, 2nd number: 1 4/8
25/30 - 12/8 is -2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
25/30 = 25 × 4/30 × 4 = 100/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
12/8 = 12 × 15/8 × 15 = 180/120 - Subtract the two like fractions:
100/120 - 180/120 = 100 - 180/120 = -80/120 - After reducing the fraction, the answer is -2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30-12/8 25/30-24/8 25/60-12/8 25/30-12/16 75/30-12/8 25/30-36/8 25/90-12/8 25/30-12/24 25/30-60/8 25/30-12/40 25/30-84/8 25/30-12/56