Subtract 10/49 from 15/70
15/70 - 10/49 is 1/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 49 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
15/70 = 15 × 7/70 × 7 = 105/490 - Likewise, for the 2nd fraction, since 49 × 10 = 490,
10/49 = 10 × 10/49 × 10 = 100/490 - Subtract the two like fractions:
105/490 - 100/490 = 105 - 100/490 = 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: 30/70-10/49 15/70-20/49 15/70-10/98 45/70-10/49 15/70-30/49 75/70-10/49 15/70-50/49 15/70-70/49