题目内容
解方程
| 16x-3.6=5.4 | 2x-
|
|
(1)16x-3.6=5.4,
16x-3.6+3.6=5.4+3.6,
16x÷16=9÷16,
x=0.5625;
(2)2x-
x=21,
x=21,
x×
=21×
,
x=14.7;
(3)
+
x=
,
+
x-
=
-
.
x×
=1×
,
x=
.
16x-3.6+3.6=5.4+3.6,
16x÷16=9÷16,
x=0.5625;
(2)2x-
| 4 |
| 7 |
| 10 |
| 7 |
| 10 |
| 7 |
| 7 |
| 10 |
| 7 |
| 10 |
x=14.7;
(3)
| 1 |
| 5 |
| 5 |
| 6 |
| 6 |
| 5 |
| 1 |
| 5 |
| 5 |
| 6 |
| 1 |
| 5 |
| 6 |
| 5 |
| 1 |
| 5 |
| 5 |
| 6 |
| 6 |
| 5 |
| 6 |
| 5 |
x=
| 6 |
| 5 |
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