题目内容
(20l0?黔东南州模拟)解方程
|
|
|
①
×7-
x=1,
-
x=1,
-
x+
x=1+
x,
1+
x=
,
1+
x-1=
-1,
x=
,
x÷
=
÷
,
x=
;
②
:x=7:7,
7x=
×7,
7x=
,
7x÷7=
÷7,
x=
;
③
=70%,
×7=0.7×7,
x=1.z.
| 7 |
| 7 |
| 7 |
| 8 |
| 17 |
| 7 |
| 7 |
| 8 |
| 17 |
| 7 |
| 7 |
| 8 |
| 7 |
| 8 |
| 7 |
| 8 |
1+
| 7 |
| 8 |
| 17 |
| 7 |
1+
| 7 |
| 8 |
| 17 |
| 7 |
| 7 |
| 8 |
| 11 |
| 7 |
| 7 |
| 8 |
| 7 |
| 8 |
| 11 |
| 7 |
| 7 |
| 8 |
x=
| zz |
| 7 |
②
| 7 |
| 7 |
7x=
| 7 |
| 7 |
7x=
| 1z |
| 7 |
7x÷7=
| 1z |
| 7 |
x=
| 7 |
| 7 |
③
| x |
| 7 |
| x |
| 7 |
x=1.z.
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