Answers

Add 56/18 and 45/80

1^st number: 3 2/18, 2^nd number: 45/80

56/18 + 45/80 is 529/144.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 18 × 40 = 720,
   56/18 = 56 × 40/18 × 40 = 2240/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   45/80 = 45 × 9/80 × 9 = 405/720
4. Add the two like fractions:
   2240/720 + 405/720 = 2240 + 405/720 = 2645/720
5. 2645/720 simplified gives 529/144
6. So, 56/18 + 45/80 = 529/144
   In mixed form: 397/144

MathStep (Works offline)

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

Related: ⁵⁶/₁₈+⁹⁰/₈₀ ⁵⁶/₃₆+⁴⁵/₈₀ ⁵⁶/₅₄+⁴⁵/₈₀ ⁵⁶/₉₀+⁴⁵/₈₀

Add Fractions Calculator