Solve for x: |2x + 12| = 18 (5 points) x = 3, x = −3 x = 3, x = −15 x = 15, x = −15 x = −3, x = 15

Question

asked Jul 5, 2021 147k views

1 Answer

Joaquin Iurchuk · Answer 1 · 2021-07-09T11:10:03+0000

Answer:

$x=3\text{ or } x=-15$

Explanation:

So we have the equation:

|2x+12|=18

Definition of Absolute Value:

$2x+12=18\text{ or } 2x+12=-18$

Subtract 12 from both sides for both equations:

$2x=6\text{ or } 2x=-30$

Divide both sides by 2 for both equations:

$x=3\text{ or } x=-15$

And we're done!