Subtract 50/9 from 18/70
1st number: 18/70, 2nd number: 5 5/9
18/70 - 50/9 is -1669/315.
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,
18/70 = 18 × 9/70 × 9 = 162/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
50/9 = 50 × 70/9 × 70 = 3500/630 - Subtract the two like fractions:
162/630 - 3500/630 = 162 - 3500/630 = -3338/630 - After reducing the fraction, the answer is -1669/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/70-50/9 18/70-50/18 54/70-50/9 18/70-50/27 90/70-50/9 18/70-50/45 18/70-50/63