6 - 5n - (5 - 3n) = 6 - 5n - 5 + 3n
= 1 - 2n
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6 - 5n - (5 - 3n) = 6 - 5n - 5 + 3n
= 1 - 2n
= 6-5n -5 + 3n
= 6-5-5n+3n
= 1 - 2n
untuk -3n tandanya berubah karena didepan kurung tandanya (-) . mohon koreksi kl ada kesalahan. trms