Subtract 70/49 from 63/70
1st number: 63/70, 2nd number: 1 21/49
63/70 - 70/49 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,
63/70 = 63 × 7/70 × 7 = 441/490 - Likewise, for the 2nd fraction, since 49 × 10 = 490,
70/49 = 70 × 10/49 × 10 = 700/490 - Subtract the two like fractions:
441/490 - 700/490 = 441 - 700/490 = -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: 63/70-70/98