Answers

Add 30/80 and 90/54

1^st number: 30/80, 2^nd number: 1 36/54

30/80 + 90/54 is 49/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 54 is 2160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2160
2. For the 1st fraction, since 80 × 27 = 2160,
   30/80 = 30 × 27/80 × 27 = 810/2160
3. Likewise, for the 2nd fraction, since 54 × 40 = 2160,
   90/54 = 90 × 40/54 × 40 = 3600/2160
4. Add the two like fractions:
   810/2160 + 3600/2160 = 810 + 3600/2160 = 4410/2160
5. 4410/2160 simplified gives 49/24
6. So, 30/80 + 90/54 = 49/24
   In mixed form: 21/24

MathStep (Works offline)

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

Related: ⁶⁰/₈₀+⁹⁰/₅₄ ⁹⁰/₈₀+⁹⁰/₅₄

Add Fractions Calculator