7x -3 = x - 2 (5x -1)

Odpowiedź :

7x - 3 = x - 2 (5x - 1)

7x - 3 = x - 10x + 2

7x - 3 = -9x + 2    

7x - 3 + 3 = -9x + 2 + 3

7x = -9x + 5

7x + 9x = -9x + 5 + 9x

16x = 5x     | : 16

x = [tex]\frac{5}{16}[/tex]