Question

How many solutions are in 9x+16=4x

Answer 1

$9x + 16 = 4x \\ \\ 16 = 4x - 9x \ / \ subtract \ 9x \ from \ each \ side \\ \\ 16 = -5x \ / \ simplify \\ \\ \frac{16}{-5} = x \ / \ divide \ each \ side \ by \ -5 \\ \\ -\frac{16}{5} =x \ / \ simplify \\ \\ x = - \frac{16}{5} \ / \ switch \ the \ side \\ \\ Answer: \fbox {One Solution: x = -16/5}$

Answer 2

9x + 16 = 4x
-9x           -9x

16 = -5x/-5

16/-5 = x

Answer: One solution because x = -16/5