Question

What is 2/3 + 3/4 or 2.3 + 3.4?

Answer 1

$\frac{2}{3} + \frac{3}{4}$

*Find the LCD (Least Common Denominator)
$\frac{2 * 4}{3 * 4} + \frac{3 * 3}{4 * 3}$

*Add 
$\frac{8}{12} + \frac{9}{12}$
$\frac{17}{12}$

*Lastly, reduce the fraction
$\frac{17}{12} = 1\frac{5}{12}$

Answer 2

2/3+3/4=17/12=1.417 This is the anwser