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國中7年級數學 - 代入消去法與加減消去法解二元一次聯立方程式
二元一次方程式 dual linear equation
聯立方程式 simultaneous equations
Grade 7 Math - How to solve the dual linear simultaneous equations.

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Everyone can learn math or English easily from this video channel. Everyone can also learn how to speak Chinese. I hope everyone would love this video channel. 這英文與數學影片學習頻道能希望每個人都能很輕鬆的學習英文、中文與數學, 也希望大家能喜歡此影片頻道。喜歡它請訂閱此頻道，謝謝! Please subscribe this video channel. Thanks

二元一次聯立方程式- 7年級數學(Grade 7 Math-How to solve the dual linear simultaneous equations.)

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