Odpowiedź:
a) 9x - 5 = 8x + 8
9x - 8x = 8 + 5
x = 13
b) 4x - 5 - 8x - 15 = 4
4x - 8x = 4 + 5 + 15
-4x = 24
x = -6
c) 3(x + 5) + 2x = x - 1
3x + 15 + 2x = x - 1
3x + 2x -x = -1 - 15
4x = -16
x = -4
d) -2(x + 5) - (5x - 4) = 4x + 1
-2x - 10 - 5x + 4 = 4x + 1
-2x - 5x - 4x = 1 - 4 + 10
-11x = 7
x = [tex]-\frac{7}{11}[/tex]
Pozdrawiam, miłego dnia
