题目内容
解方程
x-
=0
x÷
=
x+x=14.
| 5 |
| 7 |
| 1 |
| 5 |
| 3 |
| 8 |
| 9 |
| 14 |
| 1 |
| 3 |
| 3 |
| 4 |
(1)
x-
=0,
x-
+
=0+
,
x=
,
x×
=
×
,
x=
;
(2)
x÷
=
,
x÷
×
=
×
,
x=
,
x×
=
×
,
x=
;
(3)
x+x=14,
(
+1)x=14,
x=14,
x×
=14×
,
x=8.
| 5 |
| 7 |
| 1 |
| 5 |
| 5 |
| 7 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
| 5 |
| 7 |
| 1 |
| 5 |
| 5 |
| 7 |
| 7 |
| 5 |
| 1 |
| 5 |
| 7 |
| 5 |
x=
| 7 |
| 25 |
(2)
| 3 |
| 8 |
| 9 |
| 14 |
| 1 |
| 3 |
| 3 |
| 8 |
| 9 |
| 14 |
| 9 |
| 14 |
| 1 |
| 3 |
| 9 |
| 14 |
| 3 |
| 8 |
| 3 |
| 14 |
| 3 |
| 8 |
| 8 |
| 3 |
| 3 |
| 14 |
| 8 |
| 3 |
x=
| 4 |
| 7 |
(3)
| 3 |
| 4 |
(
| 3 |
| 4 |
| 7 |
| 4 |
| 7 |
| 4 |
| 4 |
| 7 |
| 4 |
| 7 |
x=8.
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