Answers

Subtract 28/80 from 98/45

1^st number: 2 8/45, 2^nd number: 28/80

98/45 - 28/80 is 329/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 45 × 16 = 720,
   98/45 = 98 × 16/45 × 16 = 1568/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   28/80 = 28 × 9/80 × 9 = 252/720
4. Subtract the two like fractions:
   1568/720 - 252/720 = 1568 - 252/720 = 1316/720
5. After reducing the fraction, the answer is 329/180
6. In mixed form: 1149/180

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁹⁸/₄₅-⁵⁶/₈₀ ⁹⁸/₉₀-²⁸/₈₀ ⁹⁸/₄₅-⁸⁴/₈₀

Subtract Fractions Calculator