Question

Mal always solve the equation of negative 5 x minus 16 equals 8, his work is shown below identify the era where it was made step one not gonna 5 x minus 16 plus 16 equals 8 plus 16 Sep 2 negative 5 x equals 24 step, 3 negative 5 x, over 5 equals 24 over 5 step 424 are 5.

Answer 1

Given:

The equation is

$-5x-16=8$

To find:

The error and correct solution.

Solution:

We have,

$-5x-16=8$

Add 16 on both sides.

$-5x-16+16=8+16$

$-5x=24$

Divide both sides by -5.

$\dfrac{-5x}{-5}=\dfrac{24}{-5}$

$x=-\dfrac{24}{5}$

Third step is incorrect because he divide the equation by 5 instead of -5.

Therefore, the correct solution is $x=-\dfrac{24}{5}$.