Question

Rezolvati in Q , ecuatiile urmatoare , folosind proportii derivate : a) ×/144-x=64/x-64
Va rog rapidddd dau coronita

Answer 1

x=144-64
x=80
80-64=16

Answer 2

Aduam numaratorii la numitori si obtinem:
$\dfrac{x}{144-x}=\dfrac{64}{x-64}\Rightarrow \dfrac{x}{144}=\dfrac{64}{x}\Rightarrow x^2=144\cdot64\Rightarrow$

$\Rightarrow x=\sqrt{144\cdot64}=\sqrt{144}\cdot\sqrt{64}=12\cdot8=96$