Question

е) 3|3x-1|-7=14 dau coroana+15 puncte

Answer 1

Răspuns:

e)3|3x-1|-7=14

3|3x-1|=21

|3x-1|=7

3x-1=7->3x=8->x=8/3

3x-1=-7->3x=-6->x=-6/3=-2

S={8/3,-2}