题目内容
解方程
(1)x÷
=
÷
(2)
x+
x=4.
(1)x÷
| 3 |
| 8 |
| 9 |
| 16 |
| 3 |
| 4 |
| 1 |
| 3 |
| 1 |
| 5 |
分析:(1)先计算
÷
=
,然后等式的两边同时乘
即可;
(2)先计算
x+
x=
x,然后等式的两边同时除以
即可.
| 9 |
| 16 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 8 |
(2)先计算
| 1 |
| 3 |
| 1 |
| 5 |
| 8 |
| 15 |
| 8 |
| 15 |
解答:解:
(1)x÷
=
÷
,
x÷
=
,
x÷
×
=
×
,
x=
;
(2)
x+
x=4,
x=4,
x÷
=4÷
,
x=
.
(1)x÷
| 3 |
| 8 |
| 9 |
| 16 |
| 3 |
| 4 |
x÷
| 3 |
| 8 |
| 3 |
| 4 |
x÷
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 4 |
| 3 |
| 8 |
x=
| 9 |
| 32 |
(2)
| 1 |
| 3 |
| 1 |
| 5 |
| 8 |
| 15 |
| 8 |
| 15 |
| 8 |
| 15 |
| 8 |
| 15 |
x=
| 15 |
| 2 |
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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