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