Subtract 15/70 from 10/49
10/49 - 15/70 is -1/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 49 × 10 = 490,
10/49 = 10 × 10/49 × 10 = 100/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
15/70 = 15 × 7/70 × 7 = 105/490 - Subtract the two like fractions:
100/490 - 105/490 = 100 - 105/490 = -5/490 - After reducing the fraction, the answer is -1/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/49-15/70 10/49-30/70 10/98-15/70 30/49-15/70 10/49-45/70 50/49-15/70 10/49-75/70 70/49-15/70