tentukan nilai x dari | 5x-15|=30

Kelas 10 Matematika
Bab Nilai Mutlak

|5x - 15| = 30

5x - 15 = 30
5x = 30 + 15
x = 45/5
x = 9

5x - 15 = -30
5x = -30 + 15
x = -15/5
x = -3

Jawabannya:

Mapel. : Matematika
Bab. : Nilai Mutlak

Pembahasan:

5x - 15 = 30
5x = 15 + 30
5x = 45
x = 9

5x - 15 = -30
5x = 15 + (-30)
5x = -15
x = -3

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