Answer:
see below
Explanation:
5|x| + 3 < 18
Subtract 3 from each side
5|x| + 3-3 < 18-3
5|x| < 15
Divide by 5
5|x| /5 < 15/5
|x| < 3
There are two solutions for an absolute value, one positive and one negative ( the negative flips the inequality)
x <3 and x > -3