题目内容
求未知数ⅹ.
ⅹ+
ⅹ=15
ⅹ:
=
:
.
| 2 |
| 3 |
| 1 |
| 6 |
| 3 |
| 4 |
| 2 |
| 5 |
| 15 |
| 16 |
| 8 |
| 9 |
(1)
ⅹ+
ⅹ=15,
(
+
)ⅹ=15,
X÷
=15÷
,
X=15×
,
X=18;
(2)
ⅹ:
=
:
,
ⅹ×
=
×
,
X=
,
X÷
=
÷
,
X=
×
,
X=
.
| 2 |
| 3 |
| 1 |
| 6 |
(
| 2 |
| 3 |
| 1 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
X=15×
| 6 |
| 5 |
X=18;
(2)
| 3 |
| 4 |
| 2 |
| 5 |
| 15 |
| 16 |
| 8 |
| 9 |
| 3 |
| 4 |
| 8 |
| 9 |
| 2 |
| 5 |
| 15 |
| 16 |
| 2 |
| 3 |
| 3 |
| 8 |
| 2 |
| 3 |
| 2 |
| 3 |
| 3 |
| 8 |
| 2 |
| 3 |
X=
| 3 |
| 8 |
| 3 |
| 2 |
X=
| 9 |
| 16 |
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