Find the value of the variable that satisfies the equation. A)12-19= -7x

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12-19 = -7x

In this equation, x is the variable so we must solve for x:

First simplify:

-7 = -7x

Now to get x (the variable) by itself, we need to divide both sides by -7:

`-7/-7 = (-7x)/-7`   

`therefore1=x`

`therefore` x=1

To check that this satisfies the equation, substitute x=1 into

12-19= -7x

`therefore` -7=-7 (1)

`therefore -7=-7`

Therefore x=1 satisfies the equation

 

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