题目内容
(1)计算:-
[-32×(-
)2-2]
(2)解方程:
-
=x-1-
.
| 3 |
| 4 |
| 2 |
| 3 |
(2)解方程:
| x-9 |
| 6 |
| 2+x |
| 3 |
| x-2 |
| 2 |
(1)原式=-
[-9×
-2]
=-
[-4-2]
=-
×(-6)
=
;
(2)
-
=x-1-
去分母得,
x-9-2(2+x)=6(x-1)-3(x-2)
去括号得,
x-9-4-2x=6x-6-3x+6
化简得,
-x-13=3x
移项合并同类项得,
-4x=13
系数化为1得,
x=-
.
| 3 |
| 4 |
| 4 |
| 9 |
=-
| 3 |
| 4 |
=-
| 3 |
| 4 |
=
| 9 |
| 2 |
(2)
| x-9 |
| 6 |
| 2+x |
| 3 |
| x-2 |
| 2 |
去分母得,
x-9-2(2+x)=6(x-1)-3(x-2)
去括号得,
x-9-4-2x=6x-6-3x+6
化简得,
-x-13=3x
移项合并同类项得,
-4x=13
系数化为1得,
x=-
| 13 |
| 4 |
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