Solve for x: |3x + 12| = 18

x = 2, x = −10

x = 2, x = −2

x = 10, x = −10

x = −2, x = 10

Question

Solve for x: |3x + 12| = 18

 x = 2, x = −10

 x = 2, x = −2

 x = 10, x = −10

 x = −2, x = 10

cwrw238 · Answer

the expression in the modulus signs can be negative or positive 
so you have to solve 2 equations

3x + 12 = 18   and 3x + 12 = -18

anonymous · Answer

i know that x can equal 2

cwrw238 · Answer

right - thas the solution of first equation

cwrw238 · Answer

now solve the 2nd

anonymous · Answer

thats where i get stuck

cwrw238 · Answer

3x + 12 = -18
subtract -12 from both sides

whatt does that give you/

anonymous · Answer

oh now i understand since it has an absolute value when it's an odd it becomes positive so that means its 2 and -10

cwrw238 · Answer

2 and -10 is correct

anonymous · Answer

how about this one 
Solve for x: 2|2x − 2| + 4 = 20

 x = 5, x = −3

 x = 5, x = −5

 x = 3, x = −3

 x = −5, x = 3