Subtract 8/12 from 30/35
30/35 - 8/12 is 4/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
30/35 = 30 × 12/35 × 12 = 360/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
8/12 = 8 × 35/12 × 35 = 280/420 - Subtract the two like fractions:
360/420 - 280/420 = 360 - 280/420 = 80/420 - After reducing the fraction, the answer is 4/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/35-8/12 30/35-16/12 30/70-8/12 30/35-8/24 90/35-8/12 30/35-24/12 30/35-8/36 30/35-40/12 30/35-8/60 30/35-56/12 30/35-8/84