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harga 2 pulpen = 4.400
ditanya = harga 4 pulpen dan 2 pensil?
jawab
harga 1 pensil = 7.300:3 = 2.400
harga 1 pulpen = 4.400:2=2.200
harga 4 pulpen+2 pensil
= 4 (2.200)+2 (2.400)
=8.800+4.800
=13.600