What is the justification for each step in the solution of the equation?

23x−13=2(x+2) Given
2x−1=6(x+2)
2x−1=6x+12 Distributive Property
2x=6x+13
−4x=13 Addition or Subtraction Property of Equality
x=−134

Respuesta :

For this case we have the following equation:

[tex]\frac{2}{3}x-\frac{1}{3}= 2 (x + 2)\\[/tex]

If we multiply both sides of the equation by 3 we get:

[tex]2x-1 = 6 (x + 2)[/tex] ---> Multiplication Property of Equality

Applying the distributive property we have:

[tex]2x-1 = 6x + 12[/tex] ---> Distributive Property

Adding 1 on both sides of equality we have:

[tex]2x-1 + 1 = 6x + 12 + 1\\[/tex]

[tex]2x = 6x + 13[/tex] ---> Addition Property of Equality

Subtracting [tex]6x[/tex] on both sides we have:

[tex]-6x + 2x = 6x-6x + 13\\[/tex]

[tex]-4x = 13[/tex] ---> Subtraction Property of Equality

Finally, dividing by -4 on both sides we have:

[tex]\frac{-4x}{-4}= \frac{13}{-4}\\[/tex]

[tex]x = -\frac{13}{4}[/tex]---> Division Property of Equality


Answer:

2/3x - 1/3 = 2(x + 2)          Given

2x - 1 = 6(x + 2)          Multiplication or Division Property of Equality

2x - 1 = 6x + 12         Distributive Property

2x = 6x + 13          Addition or Subtraction Property of Equality

-4x = 13          Addition or Subtraction Property of Equality

x = -13/4         Multiplication or Division Property of Equality


I took the test, you can trust these answer are correct.