题目内容

解方程.
5x-3×
10
7
=
7
5

5-
2
3
x=
1
3

2x+40%x=7.2
5×(x-
1
3
)=2.
(1)5x-3×
10
7
=
7
5

5x-3×
10
7
+3×
10
7
=
7
5
+3×
10
7

5x=
199
35

5x÷5=
199
35
÷5

x=1
24
175


(2)5-
2
3
x=
1
3

5-
2
3
x+
2
3
x=
1
3
+
2
3
x

1
3
+
2
3
x=5

1
3
+
2
3
x-
1
3
=5-
1
3

2
3
3
2
=
14
3
×
3
2

x=7;

(3)2x+40%x=7.2,
2.4x=7.2,
2.4x÷2.4=7.2÷2.4,
x=3;

(4)5×(x-
1
3
)=2,
5×(x-
1
3
)÷5=2÷5,
x-
1
3
=
2
5

x-
1
3
+
1
3
=
2
5
+
1
3

x=
11
15
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网