Mathematics
Junior High
Solved
加法と減法です🙇♀️
8+(-2)-5-(-9)の問題なんですけど、
=8-2-5+9
=8+9-2-5 ←ここではどうして(8+9)-(2-5)
=17-7 じゃなくて(8+9)(-2-5) (?)
=10 ってかんじなんですか?
めんどくさくてすみません😭🙏😞
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えそうなんですか?!