Odpowiedź :
Odpowiedź:
2(x + 3) = 12 + x
2x + 6 = 12 + x
2x - x = 12 - 6
x = 6
Spr.: L = 2(x + 3) = 2(6 + 3) = 2 • 9 = 18
P = 12 + x = 12 + 6 = 18
Pozdrawiam.
Odpowiedź:
2(x + 3) = 12 + x
2x + 6 = 12 + x
2x - x = 12 - 6
x = 6
Spr.: L = 2(x + 3) = 2(6 + 3) = 2 • 9 = 18
P = 12 + x = 12 + 6 = 18
Pozdrawiam.