Mathematics
Junior High
這題是解二元一次聯立方程式 這題算了好久都算不出來 誰可以幫幫我😭
三、計算題:(20分) +)3x-2y=5
12%=2.1.
1.利用代入消去法,解二元一次聯立方程式
54:
6x-8y=9
=x+
2
。
-20
y:
-2
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