Find the value of y in the diagram below

[tex]we \: can \: tell \: that \\ 1. \: \: 13x - 26 = 7x + 16 \\ 2. \: \: 7 x + 16 + 9y + 7 = 180\\ from \: 1. \\ 6x = 42 \: so \: x = 7 \\ from \: 2. \\ y = 12[/tex]