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August 21, 2014

August 21, 2014

Posted by **Mike** on Wednesday, January 30, 2013 at 7:12pm.

It says x=3 but I don't understand how, can you you explain the steps for me?

- Math -
**Ms. Sue**, Wednesday, January 30, 2013 at 7:17pm5x-6 = 2x+12

Combine like terms. Subtract 2x from both sides of the equation.

5x - 2x - 6 = 12

3x - 6 = 12

Add 6 to both sides.

3x = 12 + 6

3x = 18

Divide both sides by 3.

x = 18/3

x = 6

___________________________

It looks like x does not equal 3. Let's try substituting 3 for x.

5x-6 = 2x+12

(5 * 3) - 6 = (2 * 3) + 12

15 - 6 = 6 + 12

Nope! 3 doesn't work.

- Math -
**Candy**, Wednesday, January 30, 2013 at 7:19pm5x-6=2x+12

You subtract 12 on both sides of the equal sign

Then you get 5x-18=2x

Subtract 5x on both sides

-18=-3x

Divide by -3 both sides

You get x=6

- Math -
**Mike**, Wednesday, January 30, 2013 at 7:24pmThank You That Is What I Got Also, But The Workbook Said x equaled 3

- Math -
**Candy**, Wednesday, January 30, 2013 at 7:26pmIm sorry but the books wrong

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