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Jika nilai (3x - 8) negatif (-)
2 -(3x - 8) = 10
2 (3x - 8) = -10
3x - 8 = -5
3x = 3
x = 1
Jika nilai (3x - 8) positif (+)
2 (3x - 8) = 10
3x - 8 = 5
3x = 13
x = 13/3
Kenapa ada dua jawaban?
Karena kita belum tau pasti nih, nilai dari (3x - 8) itu positif atau negatif
- Oswyth -