Question

 calculeaza x daca
x+1 supra 2x +1= 5 supra 8

Answer 1

Răspuns:

Explicație pas cu pas:

fiin proportie

8(x+1)=5(2x+1)

8x+8=10x+5

2x=3

x=3/2

Answer 2

$\displaystyle \frac{x+1}{2x+1} =\frac{5}{8} \Rightarrow 8(x+1)=5(2x+1)\Rightarrow 8x+8=10x+5 \Rightarrow \\\\ \Rightarrow 8x-10x=5-8 \Rightarrow -2x=-3 \Rightarrow \boxed{x=\frac{3}{2} }$