Question

Na figura, sendo a Il bc, o valor de x é

(A) 9
(B) 12
(C) 8
(D) 11​

Answer 1

Resposta:

$\frac{2x-2}{4}=\frac{3x+1}{7}$

7(2x - 2) = 4(3x + 1)

14x - 14 = 12x + 4

14x - 12x = 4 + 14

2x = 18

x = 18/2

x = 9

Answer 2

7(2x - 2) = 4(3x + 1) %3D 14x - 14 = 12x + 4 14x - 12x = 4 + 14 2x = 18 x = 18/2 X = 9