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Diskon = 30% = 30/100 x Rp150.000 = Rp45.000
Maka;
Dibayar = Rp150.000 - Rp45.000 = Rp105.000 ( A )
Nomor 2
2(3x+y) + 4(2x-y)
= 6x + 2y + 8x - 4y
= 6x + 8x + 2y - 4y
= 14x - 2y ( D )
2. 2(3x+y) + 4(2x-y) = 6x + 2y + 8x - 4y+ 14x - 2y yang D