Math

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5x-6 = 2x+12

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

• Math -

5x-6 = 2x+12

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

5x - 2x - 6 = 12

3x - 6 = 12

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 -

5x-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 -

Thank You That Is What I Got Also, But The Workbook Said x equaled 3

• Math -

Im sorry but the books wrong

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