Answers

Subtract 10/72 from 90/50

1^st number: 1 40/50, 2^nd number: 10/72

90/50 - 10/72 is 299/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 72 is 1800
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1800
2. For the 1st fraction, since 50 × 36 = 1800,
   90/50 = 90 × 36/50 × 36 = 3240/1800
3. Likewise, for the 2nd fraction, since 72 × 25 = 1800,
   10/72 = 10 × 25/72 × 25 = 250/1800
4. Subtract the two like fractions:
   3240/1800 - 250/1800 = 3240 - 250/1800 = 2990/1800
5. After reducing the fraction, the answer is 299/180
6. In mixed form: 1119/180

MathStep (Works offline)

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

Related: ⁹⁰/₅₀-²⁰/₇₂ ⁹⁰/₅₀-³⁰/₇₂ ⁹⁰/₅₀-⁵⁰/₇₂ ⁹⁰/₅₀-⁷⁰/₇₂

Subtract Fractions Calculator