题目内容
求未知数X.
| 4X+0.8×6=15.2 | X-
| X:
|
(1)4X+0.8×6=15.2,
4X+4.8=15.2,
4X+4.8-4.8=15.2-4.8,
4X=10.4,
4X÷4=10.4÷4,
X=2.6;
(2)X-
X=
,
(1-
)X=
,
X=
,
X×
=
×
,
X=
;
(3)X:
=2:
,
X=
×2,
X×
=
×
,
X=
.
4X+4.8=15.2,
4X+4.8-4.8=15.2-4.8,
4X=10.4,
4X÷4=10.4÷4,
X=2.6;
(2)X-
| 1 |
| 3 |
| 5 |
| 6 |
(1-
| 1 |
| 3 |
| 5 |
| 6 |
| 2 |
| 3 |
| 5 |
| 6 |
| 2 |
| 3 |
| 3 |
| 2 |
| 5 |
| 6 |
| 3 |
| 2 |
X=
| 5 |
| 4 |
(3)X:
| 3 |
| 4 |
| 9 |
| 10 |
| 9 |
| 10 |
| 3 |
| 4 |
| 9 |
| 10 |
| 10 |
| 9 |
| 3 |
| 2 |
| 10 |
| 9 |
X=
| 5 |
| 3 |
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