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Clearnote
Q&A
Junior High
Mathematics
請問這兩題怎麼寫?求解🙏🏻
Mathematics
初中
约4年ago
Hana
請問這兩題怎麼寫?求解🙏🏻
重點二:解二元一次聯立方程式(代入消去法) 5x-y=5 1. 若二元一次聯立方程式 1 的解為x=a,y=b,則a+b之值為何? 5. 75 31 29 (B) (C) 13 25 (D) 25 y=5* (A) () Alu (C 5x - 7 x = 5
197x+4y=11 (2) 解二元一次聯立方程式 得y=? 197x=19-2y 4 (A) - 4 (B) (C) 3 - () (D) 5 when 1972 - 16 = 11 199x=19+8 27
Answers
Heme
约4年ago
帶入消去,把一樣的抓下來,再整理式子
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