|x+3|+|5x+10|=15 Tolong bantu

6x = 15 - 3 - 10
6x = 2
x = 3

(x+3) + (5x+10) =15
x+5x = 15-10-3
6x = 2
x = 2 : 6
x = 1/3

(x+3) + (5x+10) = -15
x+5x = -15-10-3
6x = -28
x = -28 : 6
x = -4
maka himpunan penyelesainya adalah
{ -4, 1/3)