Subtract 98/70 from 4/9
1st number: 4/9, 2nd number: 1 28/70
4/9 - 98/70 is -43/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
4/9 = 4 × 70/9 × 70 = 280/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
98/70 = 98 × 9/70 × 9 = 882/630 - Subtract the two like fractions:
280/630 - 882/630 = 280 - 882/630 = -602/630 - After reducing the fraction, the answer is -43/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/9-98/70 4/18-98/70 12/9-98/70 4/27-98/70 20/9-98/70 4/45-98/70 28/9-98/70 4/63-98/70