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Jawaban kamu keliru pada no 1
Seharusnya - × (-) = +
Pambetulannya terlampir yaa :)
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Keterangan :
– × (–) => +
+ × + => +
+ × (–) => –
(–) × + => –
160 + 6.300 =6460
6460-900=5560
kalo salah jangan marah
2. ad yang salah juga -6400 - 30 + 1400= -5030
maaf kalau salah, tapi perhitungan saya seperti itu