Subtract 98/40 from 28/8
1st number: 3 4/8, 2nd number: 2 18/40
28/8 - 98/40 is 21/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
28/8 = 28 × 5/8 × 5 = 140/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
98/40 = 98 × 1/40 × 1 = 98/40 - Subtract the two like fractions:
140/40 - 98/40 = 140 - 98/40 = 42/40 - After reducing the fraction, the answer is 21/20
- In mixed form: 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/8-98/40 28/16-98/40 28/8-98/80 84/8-98/40 28/24-98/40 28/40-98/40 28/56-98/40