Selesaikan nilai mutlak dari 2x-5=9

Materi : Persamaan Nilai Mutlak

Pembahasan :
|2x - 5| = 9

Ada 2 Persyaratan
(I)
2x - 5 = 9
2x = 9 + 5
2x = 14
x = 14/2
x = 7

(II)
2x - 5 = -9
2x = -9 + 5
2x = -4
x = -4/2
x = -2

Jadi, Himpunan Penyelesaian (Hp) = {-2 , 7}

|2x - 5| = 9
2x - 5 = 9
2x = 9 + 5
2x = 14
x = 14/2
x = 7

-|2x - 5| = 9
|2x - 5| = 9/-1
2x - 5 = -9
2x = -9 + 5
2x = -4
x = -4/2
x = -2
HPnya adalah {-2 , 7}