题目内容
解方程
+x=
4x-
=
+x=
.
| 2 |
| 15 |
| 17 |
| 20 |
4x-
| 4 |
| 7 |
| 3 |
| 7 |
| 4 |
| 11 |
| 9 |
| 22 |
(1)
+x=
,
+x-
=
-
,
x=
;
(2)4x-
=
,
4x-
+
=
+
,
4x÷4=1÷4,
x=0.25;
(3)
+x=
,
+x-
=
-
,
x=
| 2 |
| 15 |
| 17 |
| 20 |
| 2 |
| 15 |
| 2 |
| 15 |
| 17 |
| 20 |
| 2 |
| 15 |
x=
| 43 |
| 60 |
(2)4x-
| 4 |
| 7 |
| 3 |
| 7 |
4x-
| 4 |
| 7 |
| 4 |
| 7 |
| 3 |
| 7 |
| 4 |
| 7 |
4x÷4=1÷4,
x=0.25;
(3)
| 4 |
| 11 |
| 9 |
| 22 |
| 4 |
| 11 |
| 4 |
| 11 |
| 9 |
| 22 |
| 4 |
| 11 |
x=
| 1 |
| 22 |
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