Answers

Add 10/90 and 80/45

1^st number: 10/90, 2^nd number: 1 35/45

10/90 + 80/45 is 17/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 45 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   10/90 = 10 × 1/90 × 1 = 10/90
3. Likewise, for the 2nd fraction, since 45 × 2 = 90,
   80/45 = 80 × 2/45 × 2 = 160/90
4. Add the two like fractions:
   10/90 + 160/90 = 10 + 160/90 = 170/90
5. 170/90 simplified gives 17/9
6. So, 10/90 + 80/45 = 17/9
   In mixed form: 18/9

MathStep (Works offline)

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

Related: ²⁰/₉₀+⁸⁰/₄₅ ¹⁰/₉₀+⁸⁰/₉₀ ³⁰/₉₀+⁸⁰/₄₅ ⁵⁰/₉₀+⁸⁰/₄₅ ⁷⁰/₉₀+⁸⁰/₄₅

Add Fractions Calculator