Subtract 10/80 from 40/49
40/49 - 10/80 is 271/392.
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,
40/49 = 40 × 80/49 × 80 = 3200/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
10/80 = 10 × 49/80 × 49 = 490/3920 - Subtract the two like fractions:
3200/3920 - 490/3920 = 3200 - 490/3920 = 2710/3920 - After reducing the fraction, the answer is 271/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/49-10/80 40/49-20/80 40/98-10/80 40/49-30/80 40/49-50/80 40/49-70/80