Question

How do you solve a question with a variable like this: 5x+9

Answer 1

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

`5x\text{ + 9 = 0 }\Rightarrow5x\text{ = -9 }\Rightarrow\text{ x = -}(9)/(5)`