题目内容
解方程
x÷
=
×
x÷
=16
x=
×
.
x÷
| 5 |
| 6 |
| 4 |
| 5 |
| 3 |
| 8 |
| 2 |
| 3 |
| 4 |
| 5 |
| 9 |
| 16 |
| 5 |
| 12 |
| 3 |
| 4 |
分析:(1)等式的两边同时乘
即可;
(2)等式的两边同时乘
,然后等式的两边同时除以
即可;
(3)等式的两边同时除以
即可.
| 5 |
| 6 |
(2)等式的两边同时乘
| 4 |
| 5 |
| 2 |
| 3 |
(3)等式的两边同时除以
| 9 |
| 16 |
解答:解:(1)x÷
=
×
,
x÷
×
=
×
×
,
x=
;
(2)
x÷
=16,
x÷
×
=16×
,
x=16×
,
x÷
=16×
÷
,
x=16×
×
,
x=
;
(3)
x=
×
,
x÷
=
×
÷
,
x=
×
×
,
x=
.
| 5 |
| 6 |
| 4 |
| 5 |
| 3 |
| 8 |
x÷
| 5 |
| 6 |
| 5 |
| 6 |
| 4 |
| 5 |
| 3 |
| 8 |
| 5 |
| 6 |
x=
| 1 |
| 4 |
(2)
| 2 |
| 3 |
| 4 |
| 5 |
| 2 |
| 3 |
| 4 |
| 5 |
| 4 |
| 5 |
| 4 |
| 5 |
| 2 |
| 3 |
| 4 |
| 5 |
| 2 |
| 3 |
| 2 |
| 3 |
| 4 |
| 5 |
| 2 |
| 3 |
x=16×
| 4 |
| 5 |
| 3 |
| 2 |
x=
| 96 |
| 5 |
(3)
| 9 |
| 16 |
| 5 |
| 12 |
| 3 |
| 4 |
| 9 |
| 16 |
| 9 |
| 16 |
| 5 |
| 12 |
| 3 |
| 4 |
| 9 |
| 16 |
x=
| 5 |
| 12 |
| 3 |
| 4 |
| 16 |
| 9 |
x=
| 5 |
| 9 |
点评:本题主要考查解方程,根据等式的性质进行解答即可.
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