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Hitung yang dalam kurung dulu, jadi...
16x - 12 = 6x - 4
16x + 6x = - 4 + 12
22x = 8
x = =
16x - 12 = 6x - 4
16x - 6x = -4 + 12
10x = 8
x = 8/10
x = 4/5