Question

Solve for x. 9x = 5x + 20

Answer 1

x = 5

Explanation:

9x = 5x + 20

-5x -5x

4x = 20

÷4 ÷4

x = 5

Answer 2

⇒ x = 5

Explanation:

We're asked to find the value of x in the following equation :

⇒ 9x = 5x + 20

_______________

Concept

⇔ We need to solve the equation for x by isolating it on one side of the equation. To achieve this, I'll apply inverse operations.

So first, I'll subtract 5x from both sides :

⇒
`\sf{9x=5x+20}`

⇒
`\sf{9x-5x=20}`

Then I'll combine the like terms :

⇒
`\sf{4x=20}`

We can see now that X is almost on its own now, all we need to do is to divide both sides by 4 :

⇒
`\sf{x=5}`

Therefore, x = 5.