Answers

Add 90/75 and 27/80

1^st number: 1 15/75, 2^nd number: 27/80

90/75 + 27/80 is 123/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 80 is 1200
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1200
2. For the 1st fraction, since 75 × 16 = 1200,
   90/75 = 90 × 16/75 × 16 = 1440/1200
3. Likewise, for the 2nd fraction, since 80 × 15 = 1200,
   27/80 = 27 × 15/80 × 15 = 405/1200
4. Add the two like fractions:
   1440/1200 + 405/1200 = 1440 + 405/1200 = 1845/1200
5. 1845/1200 simplified gives 123/80
6. So, 90/75 + 27/80 = 123/80
   In mixed form: 143/80

MathStep (Works offline)

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

Related: ⁹⁰/₇₅+⁵⁴/₈₀ ⁹⁰/₇₅+⁸¹/₈₀

Add Fractions Calculator