|7x-4|=3 tentukan himpunan penyelesaian persamaannyaplisss jawab sekarang
Jawaban Terkonfirmasi
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}
|7x-2| = 3
5x = 3
= 3 – 5x
= -2