Question

resolva as equaçoes modulares
|x+7|=12
|2x - 1| = 7
|6x - 4| = 14
|3x| - 1 = 8

Answer 1

1) x+7 = 12 ---> x=5   ou   x+7 = -12 --->  x= -19

2) 2x-1 = 7 ---> x=8/2  --> x=4   ou  2x-1=-7 ---> x= -6/2  --> x=-3

3)6x-4 = 14 ---> x = 18/6 --> x=3   ou  6x-4 = -14  --> x= 10/6  --> x=5/3

4) 3x= 9 ---> x=9/3 --> x= 3   ou 3x=-9 ---> x=-9/3 --> x= -3