[tex]3x - y = 0 \: (1) \\ 5x + 2y = 22 \: (2) \\ (1) \: -> y = 3x \: (3) \\ (2), \: (3) \: - > 5x + 2 \times 3x = 22 \\ 5x + 6x = 22 \\ 11x = 22 \\ x = 2 \: (4) \\ (1), \: (4) \: - > 3 \times 2 - y = 0 \\ 6 - y = 0 \\ y = 6 \\So: \: x = 2, \: y = 6[/tex]