题目内容
解方程.
2.1×(X-0.26)=0.273
X-
X=
.
2.1×(X-0.26)=0.273
| 2 |
| 5 |
| 3 |
| 8 |
| 3 |
| 25 |
(1)2.1×(X-0.26)=0.273,
2.1×(X-0.26)÷2.1=0.273÷2.1,
X-0.26=0.13,
X-0.26+0.26=0.13+0.26,
X=0.39;
(2)
X-
X=
,
X=
,
X÷
=
÷
,
X=
.
2.1×(X-0.26)÷2.1=0.273÷2.1,
X-0.26=0.13,
X-0.26+0.26=0.13+0.26,
X=0.39;
(2)
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| 5 |
| 3 |
| 8 |
| 3 |
| 25 |
| 1 |
| 40 |
| 3 |
| 25 |
| 1 |
| 40 |
| 1 |
| 40 |
| 3 |
| 25 |
| 1 |
| 40 |
X=
| 24 |
| 5 |
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