Odpowiedź:
1) 2x - 2 = 2 x = 2
Spr. : L = 2x - 2 = 2 •2 - 2 = 4 - 2 = 2
P = 2
L = P
2) 3x + 4 = 2 x = 2
Spr. : L = 3x + 4 = 3 • 2 + 4 = 6 + 4 = 10
P = 2
L =/= P
3) 6- X = 4 x = 2
L = 6 - x = 6 - 2 = 4
P = 4
L = P
4) 4 - 3x = -1 x = 2
Spr. : L = 4 - 3x = 4 - 3 • 2 = 4 - 6 = -2
P = 2
L =/= P
A więc podkreśl działanie 1 i 3.
Pozdrawiam.
