Question

3|x − 8| + 15 = 18

A. x = 1, x = 17
B. x = −7, x = 9
C. x = 7 x = 9
D. No solution

kinda confused on this question, help please?

Answer 1

3|x − 8| + 15 = 18
3|x − 8| = 3
ie proceed with normal algebra until you arrive at
|x − 8| = k

then you know that the solutions are:
x − 8 = k, AND
x − 8 = -k

and on you go to solve for x