Question

慕安

拜託求解🙏

利用代入消去法解二元一次聯立方程式
-
X – 2y = -1 ... 1
=
4x + 3y = 7...2
答:X =|
y =||
=
0

Answer 1

✨ 最佳解答 ✨

Ny-Ålesund

從 (1) --> x = 2y - 1 代入 (2)

4(2y - 1) + 3y = 7
11y - 4 = 7
11y = 11
y = 1 再代回去最一開始 x = 2y - 1 = 2 - 1 = 1

=> x = 1, y = 1