2x - y = -1

x/6 + (y + 1)/5 = 1

2x - y = -1

5x + 6y + 6 = 30

2x - y = -1

5x + 6y = 24

2x - y = -1

17x = 18

x = 18/17

y = 2x + 1 = 53/17