Mathematics
Senior High
Solved
なんで-bcではなく+bcになるのかよく分かりません
次のガを困数分健せよ
aba-b)+bcC6-C) やa(C-a)
=- がC-bc+80-c
カ-C7 +Cし6aHBC-
-C)C+5DC-6)a-bc(で-6)
-CCb) fa2+にtb)a bC3
C-5)102 かーBC 2
-CC-b)CO2-ac-abtbc
227
-ac-abtbc)
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