11x - 0 = 4x + 19
11x - 4x = 19
7x = 19
x = 19 / 7
7x - 5(2x + 1) = 5x + 15
7x -10x - 5 =5x + 15
7x -10x -5x = 15 + 5
-8x = 20
x = 20 / (-8)
11x - 0 = 4x + 19
11x - 4x = 19
7x = 19
x = 19 / 7
7x - 5(2x + 1) = 5x + 15
7x -10x - 5 =5x + 15
7x -10x -5x = 15 + 5
-8x = 20
x = 20 / (-8)