Subtract 70/80 from 98/42
1st number: 2 14/42, 2nd number: 70/80
98/42 - 70/80 is 35/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
98/42 = 98 × 40/42 × 40 = 3920/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
70/80 = 70 × 21/80 × 21 = 1470/1680 - Subtract the two like fractions:
3920/1680 - 1470/1680 = 3920 - 1470/1680 = 2450/1680 - After reducing the fraction, the answer is 35/24
- In mixed form: 111/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/84-70/80