Question

(×)=4 (×-3)-2 (×+1) qual resposta

Answer 1

se x =4  entao (×-3)-2 (×+1)  =  vc substitui o x por 4 

(4-3)-2(4+1)= 
1- 10
-9 resposta 

Answer 2

(x)=4x-12-2x-2
(x)=4x-2x-12-2
(x)=2x-14
(x)=2x=14
(x)=x=14/2
x=7