Question

If 2x + 2x + 2x = 12 then what is the value of x in 2x - 1 = 3?

Answer 1

x = 2 because if you multiply2 times 2 you get 4. 4-1=3

Answer 2

To find the value of x, solve for x in both equations and check your answer.

2x + 2x + 2x = 12   Combine like-terms

6x = 12   Divide both sides by 6

x = 2

Check your answer.

2(2) + 2(2) + 2(2) = 12   Multiply

4 + 4 + 4 = 12   Add

12 = 12

Now, move on to the second equation.

2x - 1 = 3   Add 1 to both sides

2x = 4   Divide both sides by 2

x = 2

Check your answer.

2(2) - 1 = 3   Multiply

4 - 1 = 3   Subtract

3 = 3

So, for both equations, x = 2.