Question

3|x + 7| = 21



PLEASE HELP ASAP

Answer 1

x=0, x = -14

Explanation:

You can first divide each side with 3, which will result in :

|x+7| = 7

Then there is two cases where x is positive and x is negative :

x+7 = 7

and

x+7 = -7

x = 0

x = -14