题目内容
| X:
|
| ||||||||||||
| (
|
(1)
X=40
X×
=40×
X=64;
(2)X:
=
X=
×
X=
;
(3)
X=
×
X=
X×
=
×
X=
;
(4)
x-
+
=1
x-
=1
x-
+
=1+
x=
x×
=
×
x=
;
(5)(
+3.2)x=
(0.8+3.2)x=
4x=
4x÷4=
÷4
x=
.
| 5 |
| 8 |
| 5 |
| 8 |
| 8 |
| 5 |
| 8 |
| 5 |
X=64;
(2)X:
| 4 |
| 7 |
| 2 |
| 3 |
X=
| 4 |
| 7 |
| 2 |
| 3 |
X=
| 8 |
| 21 |
(3)
| 2 |
| 5 |
| 4 |
| 9 |
| 3 |
| 8 |
| 2 |
| 5 |
| 1 |
| 6 |
| 2 |
| 5 |
| 5 |
| 2 |
| 1 |
| 6 |
| 5 |
| 2 |
X=
| 5 |
| 12 |
(4)
| 3 |
| 5 |
| 4 |
| 7 |
| 3 |
| 7 |
| 3 |
| 5 |
| 1 |
| 7 |
| 3 |
| 5 |
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 7 |
| 3 |
| 5 |
| 8 |
| 7 |
| 3 |
| 5 |
| 5 |
| 3 |
| 8 |
| 7 |
| 5 |
| 3 |
x=
| 40 |
| 21 |
(5)(
| 4 |
| 5 |
| 2 |
| 3 |
(0.8+3.2)x=
| 2 |
| 3 |
4x=
| 2 |
| 3 |
4x÷4=
| 2 |
| 3 |
x=
| 1 |
| 6 |
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