Question

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

Răspuns:

Explicație pas cu pas:

$\frac{x + 1}{5} = \frac{x + 4}{13}$

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

$13x + 13 = 5x + 20$

$13x - 5x = 20 - 13$

$8x = 7 \Longrightarrow \boxed{x = \frac{7}{8} }$

Answer 2

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