Mathematics
Senior High
青い線の変形がわかりません。なぜこの式を変形したら次の青線の式になるのですか？
っ 0証忠/
(g笛A9COが信和で だ
= 下 +B
46 4
8 4 ゎぁ の-め99
な 2能明)
1 94pcgと 9-の-紀
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