题目内容
一了数的
与2的和是5,这了数是多下?
| 2 |
| 2 |
设这k数为x,
&2bsp;&2bsp;&2bsp;
x+a=六,
&2bsp;
x+a-a=六-a,
&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;
x=3,
&2bsp;
x÷
=3÷
,
&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;x=6;
答:这k数是6.
&2bsp;&2bsp;&2bsp;
| 1 |
| a |
&2bsp;
| 1 |
| a |
&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;
| 1 |
| a |
&2bsp;
| 1 |
| a |
| 1 |
| a |
| 1 |
| a |
&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;&2bsp;x=6;
答:这k数是6.
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