Respuesta :

Hrishii

Step-by-step explanation:

[tex] - 2x - 10 = 4 \\ \\ \therefore \: - 2x = 10 + 4 \\ \\ \therefore \: - 2x = 14\\ \\ \therefore \: x = \frac{14}{ - 2} \\ \\ \huge \red{ \boxed{\therefore \: x = - 7}}[/tex]

Thus, option (C) - 7 is the correct answer.

TheAmethyst

Hey ! there

Answer:

  • x = -7 , Option C is valid .

Step-by-step explanation:

In this question we are given with an equation that is -2x - 10 = 4 . And we are asked to find the value of x .

Solution : -

[tex] \longmapsto \qquad \: - 2x - 10 = 4[/tex]

Step 1 : Adding 10 to both sides :

[tex] \longmapsto \qquad \: - 2x - \cancel{10} + \cancel{ 10 }= 4 + 10[/tex]

On simplifying , We get :

[tex] \longmapsto \qquad \: - 2x = 14[/tex]

Step 2 : Dividing with -2 on both sides :

[tex] \longmapsto \qquad \: \dfrac{ \cancel{ - 2}x}{ \cancel{- 2}} = \cancel{ \dfrac{14}{ - 2} }[/tex]

On further calculations , We get :

[tex] \longmapsto \qquad \: \orange{\underline{\boxed{ \frak{ x= - 7}}}} \quad \star[/tex]

  • Henceforth , value of x is -7 .

Verifying : -

Now , we are verifying our answer by substituting value of x in given equation. So ,

  • -2x - 10 = 4

  • -2 ( -7 ) - 10 = 4

  • 14 - 10 = 4

  • 4 = 4

  • L.H.S = R.H.S

  • Hence , verified .

Therefore , our answer is correct .

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