Subtract 70/80 from 98/18
1st number: 5 8/18, 2nd number: 70/80
98/18 - 70/80 is 329/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
98/18 = 98 × 40/18 × 40 = 3920/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720 - Subtract the two like fractions:
3920/720 - 630/720 = 3920 - 630/720 = 3290/720 - After reducing the fraction, the answer is 329/72
- In mixed form: 441/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/36-70/80 98/54-70/80 98/90-70/80