How do you solve 6|x| - 9 = 1 5?

2 Answers
May 11, 2018

x=+-4

Explanation:

"isolate "|x|" by adding 9 to both sides and dividing by 6"

rArr6|x|=15+9=24

rArr|x|=24/6=4

"the x inside the absolute value can be positive or"
"negative"

rArrx=+-4

May 11, 2018

x = 4
x = -4

Explanation:

6|x|-9 = 15

add 9 to both sides

6|x| = 24

divide both sides by 6

|x| = 4

x = 4, x = -4

because absolute value always will return a positive value for you so |x| = 4

|4| = 4

|-4| = 4

to check your answer substitute x values in the original equation
you will get 15 = 15 which it means that the values are correct