Answer: x = -10/3 and 8/3
Add 1 to both sides:
∣3x+1∣=8+1
There are two equations:
3x+1=9 and -(3x+1)=9
Solve the first one:
3x+1=9
3x=9−1
3x=8
x=8/3
Solve the second one:
-(3x+1)=9
−3x−1=9
−3x=9+1
−3x=10
x=-10/3
