Mathematics
Senior High
⑵と⑶のやり方がわからないです!
だれか教えてください!!
162 次の連立3 元1次方程式を解け。
4g一25十cテ9 6の2c王9
(1) 1z2一5十cデ2 *(2) 1g十2の填c三11 *(3)
g十6十c三6 27十5十c三8
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