Answers

Subtract 15/45 from 98/20

1^st number: 4 18/20, 2^nd number: 15/45

98/20 - 15/45 is 137/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   98/20 = 98 × 9/20 × 9 = 882/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   15/45 = 15 × 4/45 × 4 = 60/180
4. Subtract the two like fractions:
   882/180 - 60/180 = 882 - 60/180 = 822/180
5. After reducing the fraction, the answer is 137/30
6. In mixed form: 417/30

MathStep (Works offline)

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

Related: ⁹⁸/₂₀-³⁰/₄₅ ⁹⁸/₄₀-¹⁵/₄₅ ⁹⁸/₂₀-¹⁵/₉₀ ⁹⁸/₆₀-¹⁵/₄₅ ⁹⁸/₂₀-⁷⁵/₄₅

Subtract Fractions Calculator