Nilai a yang memenuhi persamaan |15a-6|=|7a+18|

|15a – 6| = |7a + 18|
15a – 6 = 7a + 18
15a – 7a = 18 + 6
8a = 24
a = 24 : 8
a = 3

15a – 6 = -(7a + 18)
15a – 6 = -7a – 18
15a + 7a = -18 + 6
22a = -12
a = – 12/22
a = – 6/11

HP {3 , -6/11}

Semoga berguna +_+