Solve the following systems of linear equations:

I.

1. \( 5x - 3y = 3 \)

II.

1. a)

   \( \begin{cases} 5x - 2y = 6 \\ 7x + 2y = 6 \end{cases} \)

2. b)

   \( \begin{cases} 4x - 5y = -22 \\ 3x + 2y = 18 \end{cases} \)