Tentukan nilai x + 11 , jika diketahui persamaan 9x + 5 = 2x - 9

9x + 5 = 2x - 9
9x - 2x = -9 -5
7x = -14
x = -2

Nilai x + 11 = (-2) + 11
x + 11 = 9

semoga membantu........