Subtract 4/10 from 40/49
40/49 - 4/10 is 102/245.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 10 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 49 × 10 = 490,
40/49 = 40 × 10/49 × 10 = 400/490 - Likewise, for the 2nd fraction, since 10 × 49 = 490,
4/10 = 4 × 49/10 × 49 = 196/490 - Subtract the two like fractions:
400/490 - 196/490 = 400 - 196/490 = 204/490 - After reducing the fraction, the answer is 102/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/49-4/10 40/49-8/10 40/98-4/10 40/49-4/20 40/49-12/10 40/49-4/30 40/49-20/10 40/49-4/50 40/49-28/10 40/49-4/70