|7x-4|=3 tentukan himpunan penyelesaian persamaannya plisss jawab sekarang

|7x-2| = 3
5x = 3
= 3 - 5x
= -2

Bab Nilai Mutlak
Matematika SMA Kelas X

|7x - 4| = 3

(7x - 4)² = 3²
(7x - 4)² - 3² = 0
(7x - 4 + 3) (7x - 4 - 3) = 0
(7x - 1) (7x - 7) = 0
7x - 1 = 0       atau       7x - 7 = 0
7x = 1                          7x = 7
x = 1/7                         x = 7/7
                                    x = 1

HP = {1, 1/7}