一次方程式 1次方程式(2)
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1次方程式の解き方2
名前
次の方程式を解きなさい。
(1) 9 3 (2) 5 3
(3) 3 8 (4) 2 6
(5) 6 5 (6) 8 4
(7) 3 4 (8) 2 9
(9) 5 2 (10) 6 2
(11) 3 6 (12) 2 6
(13) 7 2 (14) 4 4
NO.1
/14 点30
x - = -
x + =
x
x = - x
20
18 x = x + 3
22
x + = 13
14
x =
x + = 32
x - = -
x = 54 -
24 - x
x - = -
21
x + = 38
x = x -
14
x = 48 - x
x - = -
一次方程式 1次方程式(2)
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解答
(1) 9 3 (2) 5 3
9 3 5 3
9 5
3 2
(3) 3 8 (4) 2 6
3 8 2 6
3 2
(5) 6 5 (6) 8 4
6 5 8 4
(7) 3 4 (8) 2 9
3 4 2 9
(9) 5 2 (10) 6 2
5 2 6 2
5 6
6 6
(11) 3 6 (12) 2 6
3 6 2 6
3 2
(13) 7 2 (14) 4 4
7 2 4 4
x = 6 x = 6
9
x = -4
54 54 x = x + x =
+ x = -12
x = - 18
- x = 30 x =
x = 32 x =
x x =
= x
=
- - 20
- 27 30 x + = 30
22
+
= 22 - x
- 20
= -12
x
x =
- x
x + = 32
18
x = 54 - x
x - = -
x = x = x
x =
11
+ x
+ x - x =
22
x =
12
x = 2
3
-3 3 -4
x = x
3
= x =
x + = 13
x - =
= 13 - x = 10 x
x
= - 14
=
x +
x = -8
- 14
= -4 x = 24 -
x
x x + x = 24
x = 24 x = 2 x - 21 x - x = -21
x + = 38 -7 x = -21
x = 38 - x = 3
x - = -
x = 36 x =
+ x = -8
14 x = - 14
x = -4 x = 48 -
8 x = 48 x x + x = 48