208k views
3 votes
Solve for x: 3|2x - 2| + 6 = 18.

a) x = 3, x = -3
b) x = 3, x = -1
c) x = 1, x = -1
d) x =-3, x = 1

2 Answers

4 votes

Answer:

b

Explanation:

3|2x-2| = 18-6

|2x-2| = 12/3

|2x-2|=4

2x-2 =+-4

2x -2 = -4

2x= -4+2

2x=-2

x=-1

2x -2 = 4

2x= 4+2

2x=6

x=3

User ValayPatel
by
5.6k points
5 votes

Answer:

answer: b) x = 3, x = -1

Explanation:

3|2x - 2| + 6 = 18.

divid by 3 :

|2x - 2| + 2 = 6

add -2 : |2x - 2| = 4

2x-2=4 or 2x-2=-4

2x=6 or 2x=-2

x=3 or x=-1

User Animalito Maquina
by
5.6k points