Rozwiąż równanie 5x + 9 = 2x + 36 12x + 4 = 7x +14 7t - 17 =6t -16 23s -45 = 19s - 39

5x + 9 = 2x + 36 5x - 2x = 36 - 9 3x = 27  /:3 x = 9 12x + 4 = 7x +14 12x - 7x = 14 - 4 5x = 10  /:5 x = 2 7t - 17 =6t -16 7t - 6t = -16 + 17 t = 1 23s -45 = 19s - 39 23s - 19s = -39 + 45 4s = 6  /:4 s = 6/4 s = 1 2/4 s = 1 1/2

1. 5x + 9 = 2x + 36 5x -2x = 36 - 9 3x = 27 / :3 x = 9 2. 12x + 4 = 7x + 14 12x - 7x = 14 - 4 5x = 10 /:5 x = 2 3. 7t - 17 = 6t - 16 7t -6t = -16 + 17 t = 1 4. 23s - 45 = 19s - 39 23s - 19s = - 39 + 45 4s = 6 /:4 s = 1,5   Mam nadzieję, że pomogłam  ;)