题目内容
求未知数X的值.
|
|
(1)x-
=
,
x-
+
=
+
,
x=2;
②
=
,
0.4x=28×0.1,
0.4x=2.8,
0.4x÷0.4=2.8÷0.4,
x=7.
| 3 |
| 8 |
| 13 |
| 8 |
x-
| 3 |
| 8 |
| 3 |
| 8 |
| 13 |
| 8 |
| 3 |
| 8 |
x=2;
②
| 28 |
| x |
| 0.4 |
| 0.1 |
0.4x=28×0.1,
0.4x=2.8,
0.4x÷0.4=2.8÷0.4,
x=7.
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