tentukan himpunan penyelesaian dari |6-7x|=2

maaf jikalau jawaban saya salah

Bab Nilai Mutlak
Matematika SMA Kelas X

|6 - 7x| = 2

(6 - 7x)² = 2²
(6 - 7x)² - 2² = 0
(6 - 7x + 2) (6 - 7x - 2) = 0
(-7x + 8) (-7x + 4) = 0
-7x + 8 = 0
-7x = -8
x = -8/-7
x = 8/7

-7x + 4 = 0
-7x = -4
x = -4/-7
x = 4/7

HP { 4/7, 8/7 }