Question

[2.(2x+1)+2]:2=22 x=?

Answer 1

❅ Notă: Vom rezolva enunțul prin metoda mersului invers.

[ 2 × ( 2x + 1 ) + 2 ] : 2 = 22

2 × ( 2x + 1) + 2 = 22 × 2

2 × ( 2x + 1 ) + 2 = 44

2 × ( 2x + 1 ) = 44 - 2

2 × ( 2x + 1 ) = 42

2x + 1 = 42 : 2

2x + 1 = 21

2x = 21 - 1

2x = 20

x = 20 : 2

➣ x = 10

Answer 2

Răspuns:

2(2X+1)+2=22×2=44 ;  2(2X+1)=42 ; | ;2 ;2X+1=21 ;  2X=20 ;  X=10

Explicație pas cu pas: