Question

Solve for x.

2x = 15 + x

A: x = -15
B: x = 15
C: x = -15/2
D: x = 15/2

Answer 1

2x = 15 + x

First, our goal is to get 'x' to equal something by itself. To do so, we will have to do everything on one side. Let's subtract 'x' from each sides.

`2x - x = 15`

Second, our next step is to subtract '2x - x'. Since 'x' is basically considered (1), it will equal 'x'.

`x = 15`

Answer:
`\fbox { x = 15 }`