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6x-4x = -9-5
2x = -14
x = -14/2
x = -7
jadi x-5 = -7-5 = -12
6x + 5 = 4x - 9
6x - 4x = -9 - 5
2x = -14
x = -14 : 2
x = -7
Sehingga,
x - 5 = -7 - 5
= -12