Question

Daca x supra 2 = y supra 3 = z supra 4 si z=6 , atunci x+y =...
Va rog ajutati-ma dau coroana.

Answer 1

   
[tex]\displaystyle \\ \frac{x}{2} = \frac{y}{3} = \frac{z}{4} \\ \\ z = 6 \\ \\ \frac{x}{2} = \frac{y}{3} = \frac{6}{4} \\ \\ \frac{x}{2} = \frac{y}{3} = \frac{3}{2} \\ \\ \frac{x}{2} =\frac{3}{2} ~~\Longrightarrow ~~ x = \frac{2\times 3}{2} = \boxed{3} \\ \\ \frac{y}{3} = \frac{3}{2} ~~\Longrightarrow ~~ y = \frac{3\times 3}{2} = \boxed{ \frac{9}{2} } \\ \\ \Longrightarrow ~~ x+y = 3+ \frac{9}{2} = \frac{6+9}{2} =\boxed{\boxed{\frac{15}{2} }}[/tex]