题目内容
解方程.
x-
+
=1(
+3.2)x=
.
| 3 |
| 5 |
| 4 |
| 7 |
| 3 |
| 7 |
| 4 |
| 5 |
| 2 |
| 3 |
(1)
x-
+
=1,
x-(
-
)=1,
x-
=1,
x-
+
=1+
,
x=
,
x×
=
×
,
x=
;
(2)(
+3.2)x=
,
(0.8+3.2)x=
,
4x=
,
4x×
=
×
,
x=
.
| 3 |
| 5 |
| 4 |
| 7 |
| 3 |
| 7 |
| 3 |
| 5 |
| 4 |
| 7 |
| 3 |
| 7 |
| 3 |
| 5 |
| 1 |
| 7 |
| 3 |
| 5 |
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 7 |
| 3 |
| 5 |
| 8 |
| 7 |
| 3 |
| 5 |
| 5 |
| 3 |
| 8 |
| 7 |
| 5 |
| 3 |
x=
| 40 |
| 21 |
(2)(
| 4 |
| 5 |
| 2 |
| 3 |
(0.8+3.2)x=
| 2 |
| 3 |
4x=
| 2 |
| 3 |
4x×
| 1 |
| 4 |
| 2 |
| 3 |
| 1 |
| 4 |
x=
| 1 |
| 6 |
练习册系列答案
相关题目