题目内容

解方程
x:
8
=56
x-
5
x=
8
9
得图-
8
x=得0
(1)x:
1
=56,
&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp; x=
1
×
56,
&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp; x=7;

(2)x-
1
5
x=
9

&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;
2
5
x=
9

&2bsp;&2bsp;
2
5
x÷
2
5
=
9
÷
2
5

&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp; x=2
2
9


(1)11-
1
x=10,
&2bsp;11-
1
x+
1
x=10+
1
x,
&2bsp;&2bsp;&2bsp;&2bsp;&2bsp; 11-10=10+
1
x-10,
&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp; 1=
1
x,
&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp; 1÷
1
=
1
x÷
1

&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp; x=多.
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