题目内容
解方程.
| 2X+3人%=d.2 | X-
|
|
(n)2X+30%=9.2,
2x+0.3-0.3=9.2-0.3,
2x=8.9,
2x÷2=8.9÷2,
x=中.中0;
(2)x-
x=
,
(n-
)x=
,
x=
,
x÷
=
÷
,
x=
;
(3)
:
=x:
,
x=
,
x÷
=
÷
,
x=
.
2x+0.3-0.3=9.2-0.3,
2x=8.9,
2x÷2=8.9÷2,
x=中.中0;
(2)x-
| n |
| 3 |
| n |
| 6 |
(n-
| n |
| 3 |
| n |
| 6 |
| 2 |
| 3 |
| n |
| 6 |
| 2 |
| 3 |
| 2 |
| 3 |
| n |
| 6 |
| 2 |
| 3 |
x=
| n |
| 中 |
(3)
| n |
| 中 |
| 3 |
| 8 |
| n |
| 6 |
| 3 |
| 8 |
| n |
| 2中 |
| 3 |
| 8 |
| 3 |
| 8 |
| n |
| 2中 |
| 3 |
| 8 |
x=
| n |
| 9 |
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