题目内容
解方程.
①
χ:
=
:
②
χ-
χ=4.
①
| 3 |
| 4 |
| 2 |
| 5 |
| 15 |
| 16 |
| 8 |
| 9 |
②
| 1 |
| 3 |
| 1 |
| 5 |
(1)
χ:
=
:
,
x×
=
×
,
x=
,
x×
=
×
,
x=
;
(2)
χ-
χ=4,
x=4,
x×
=4×
,
x=30.
| 3 |
| 4 |
| 2 |
| 5 |
| 15 |
| 16 |
| 8 |
| 9 |
| 3 |
| 4 |
| 8 |
| 9 |
| 2 |
| 5 |
| 15 |
| 16 |
| 2 |
| 3 |
| 3 |
| 8 |
| 2 |
| 3 |
| 3 |
| 2 |
| 3 |
| 8 |
| 3 |
| 2 |
x=
| 9 |
| 16 |
(2)
| 1 |
| 3 |
| 1 |
| 5 |
| 2 |
| 15 |
| 2 |
| 15 |
| 15 |
| 2 |
| 15 |
| 2 |
x=30.
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