Question

rezolvati ecuatia 4x+2=2x+28 unde x este numar natural

Answer 1

4x-2x=28-2
2x=26
x=26:2
x=13

Answer 2

4 x + 2 = 2 x +28       4 x -2 x = 28 - 2          2x =26   x = 26 :2 13    x =13                  proba   4 * 13 + 2 = 2 * 13 + 28      52 + 2 = 26 + 28    rezulta   54 = 54