Subtract 70/9 from 49/70
1st number: 49/70, 2nd number: 7 7/9
49/70 - 70/9 is -637/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
49/70 = 49 × 9/70 × 9 = 441/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
70/9 = 70 × 70/9 × 70 = 4900/630 - Subtract the two like fractions:
441/630 - 4900/630 = 441 - 4900/630 = -4459/630 - After reducing the fraction, the answer is -637/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/70-70/9 49/70-70/18 49/70-70/27 49/70-70/45 49/70-70/63