5x + 9
To solve for x, let's aume that 5x + 9 = 0
If 5x + 9 = 0
Subtract 9 from both side, we have:
5x + 9 - 9 = 0 - 9
5x = -9
divide both side by 5
5x/5 = -9/5
x = -9/5
[tex]5x\text{ + 9 = 0 }\Rightarrow5x\text{ = -9 }\Rightarrow\text{ x = -}\frac{9}{5}[/tex]
