Answers

Add 72/54 and 45/80

1^st number: 1 18/54, 2^nd number: 45/80

72/54 + 45/80 is 91/48.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 80 is 2160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2160
2. For the 1st fraction, since 54 × 40 = 2160,
   72/54 = 72 × 40/54 × 40 = 2880/2160
3. Likewise, for the 2nd fraction, since 80 × 27 = 2160,
   45/80 = 45 × 27/80 × 27 = 1215/2160
4. Add the two like fractions:
   2880/2160 + 1215/2160 = 2880 + 1215/2160 = 4095/2160
5. 4095/2160 simplified gives 91/48
6. So, 72/54 + 45/80 = 91/48
   In mixed form: 143/48

MathStep (Works offline)

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

Related: ⁷²/₅₄+⁹⁰/₈₀

Add Fractions Calculator