Subtract 10/70 from 98/40
1st number: 2 18/40, 2nd number: 10/70
98/40 - 10/70 is 323/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
98/40 = 98 × 7/40 × 7 = 686/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
10/70 = 10 × 4/70 × 4 = 40/280 - Subtract the two like fractions:
686/280 - 40/280 = 686 - 40/280 = 646/280 - After reducing the fraction, the answer is 323/140
- In mixed form: 243/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/40-20/70 98/80-10/70 98/40-30/70 98/40-50/70