c) -(x - 2) + 3(x - 1) = 2
-x + 2 + 3x - 3 = 2
-x + 3x - 3 = 0
2x - 3 = 0
2x =3 / : 2
x = 3/2 = 1 cała 1/2
d) 9x + 3 = 7(x - 2) - 19
9x + 3 = 7x - 14 - 19
9x + 3 = 7x - 33
9x - 7x = -3 - 3
2x = -36 / : 2
x = - 18
