Jawaban dari | 2 × - 1 | = 7

Bab Nilai Mutlak
Matematika SMA Kelas X

| 2x - 1 | = 7

2x - 1 = 7
2x = 7 + 1
x = 8 : 2
x = 4

atau

2x - 1 = - 7
2x = -7 + 1
x = - 6 : 2
x = -3

HP = { -3, 4 }

x: 4 / x: -3
|2x-1| = 7
2x = 7+1/ -7+1
2x = 8 / -6
x = 8/2 =4
x = -6/2 = -3