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6b + 5p = 11.200 (x4) --> 24b + 20p = 44.800 _
-2p = -2.800
p = 1.400
8b + 6p = 14.000
8b + 6(1.400) = 14.000
8b + 8.400 = 14.000
8b = 14.000 - 8.400
8b = 5.600
b = 700
harga 5 buku dan 8 pensil:
5b + 8p = 5 (700) + 8 (1.400)
= 3.500 + 11.200
= Rp. 14.700,-
semoga membantu ya :)