Subtract 28/49 from 3/70
3/70 - 28/49 is -37/70.
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,
3/70 = 3 × 7/70 × 7 = 21/490 - Likewise, for the 2nd fraction, since 49 × 10 = 490,
28/49 = 28 × 10/49 × 10 = 280/490 - Subtract the two like fractions:
21/490 - 280/490 = 21 - 280/490 = -259/490 - After reducing the fraction, the answer is -37/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/70-28/49 3/70-56/49 3/70-28/98 9/70-28/49 3/70-84/49 15/70-28/49 21/70-28/49