What is 6x equals 3x plus 15 and how do you do it?

Answer 1

" 6x equals 3x plus 15 " is a simple linear equation in 'x'.

Before you can "do" it, you have to know what it is that you want to do.

In other words, you have to know what the question is.

The question is: What number does ' x ' have to be to make that statement true ?

Here's how to find it:

Do anything to either side of the equation that you have to do in order to get ' x '

all by itself. But if you do anything to one side, you have to do it to both sides.

6x = 3x + 15

Subtract 3x from each side of the equation:

3x = 15

Divide each side by 3:

x = 5