Mathematics
Junior High
Resolved
連立方程式なのですが、計算が合ってるか見て頂きたいです🙇🏻♀️
問4
(4
=
3x+y
(1
3x-2y=5
= (1
y=-5
6
2
t
3x+y=
2
3 y=
y =
t) 3x t
3x
+2=
((
3x = (1 - 2
3x
= 9
3
A₁ y =
x = 3
2
x
2x
3 y =
-
4x + 5y =
4 x
-
6 y
= 8
+) 4 x 75 y =
=+8
-
4.2
+ 0
A₁ y =
(2)
11 y = 0
Y
4x
-
8
8
x =
2
-
= 0₁ x =
4
8
2
Answers
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