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(x+1) / 5 = (x+4) / 13
x = ?


Răspuns :

Răspuns:

Explicație pas cu pas:

[tex] \frac{x + 1}{5} = \frac{x + 4}{13} \\ [/tex]

[tex]13(x + 1) = 5(x + 4)[/tex]

[tex]13x + 13 = 5x + 20[/tex]

[tex]13x - 5x = 20 - 13[/tex]

[tex]8x = 7 \Longrightarrow \boxed{x = \frac{7}{8} } \\ [/tex]

Răspuns:

(x+1) / 5 = (x+4) / 13

5(x+4)=13(x+1)

5x+20=13x+13

20-13=13x-5x

7=8x

x=7/8