Subtract 12/80 from 4/49
4/49 - 12/80 is -67/980.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 49 × 80 = 3920,
4/49 = 4 × 80/49 × 80 = 320/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
12/80 = 12 × 49/80 × 49 = 588/3920 - Subtract the two like fractions:
320/3920 - 588/3920 = 320 - 588/3920 = -268/3920 - After reducing the fraction, the answer is -67/980
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/49-12/80 4/49-24/80 4/98-12/80 12/49-12/80 4/49-36/80 20/49-12/80 4/49-60/80 28/49-12/80 4/49-84/80