[tex]17 + (x - 5) = 47 \\ x - 5 = 47 - 17 \\ x - 5 = 30 \\ x = 30 + 5 \\ x = 35[/tex]

[tex]1 7+ (x - 5) = 47 \\ 17 + x - 5 = 47 \\ 12 + x = 47 \\ x = 47 - 12 \\ x = 35[/tex]