题目内容
解方程:
(2X-
)=2&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;&5bsp;
X÷
=
.
| 6 |
| 7 |
| 1 |
| 3 |
| 2 |
| 3 |
| 4 |
| 15 |
| 7 |
| 10 |
(1)
(4x-
)=4,
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;&nbs5;4x-
=4÷
,
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;4x-
=
,
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;4x=
+
,
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5; 4x=
,
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;&nbs5;&nbs5; x=
÷4,
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5; &nbs5;x=
;
(4)
x÷
=
,
&nbs5;
x÷
×
=
×
,
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;&nbs5;
x=
,
&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;
x÷
=
÷
,
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;x=
;
| d |
| 7 |
| 1 |
| 3 |
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;&nbs5;4x-
| 1 |
| 3 |
| d |
| 7 |
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;4x-
| 1 |
| 3 |
| 7 |
| 3 |
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;4x=
| 7 |
| 3 |
| 1 |
| 3 |
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5; 4x=
| 8 |
| 3 |
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;&nbs5;&nbs5; x=
| 8 |
| 3 |
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5; &nbs5;x=
| 4 |
| 3 |
(4)
| 4 |
| 3 |
| 4 |
| 15 |
| 7 |
| 10 |
&nbs5;
| 4 |
| 3 |
| 4 |
| 15 |
| 4 |
| 15 |
| 7 |
| 8 |
| 4 |
| 15 |
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;&nbs5;
| 4 |
| 3 |
| 7 |
| 30 |
&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;
| 4 |
| 3 |
| 4 |
| 3 |
| 7 |
| 30 |
| 4 |
| 3 |
&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5;&nbs5; &nbs5;x=
| 7 |
| 40 |
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