题目内容
解方程
X=
÷X=
X÷
=
.
| 5 |
| 8 |
| 1 |
| 12 |
| 2 |
| 3 |
| 1 |
| 6 |
| 5 |
| 8 |
| 10 |
| 17 |
分析:(1)依据等式的性质,方程两边同时除以
求解;
(2)依据等式的性质,方程两边同时乘x,再同时除以
求解;
(3)依据等式的性质,方程两边同时乘
求解.
| 5 |
| 8 |
(2)依据等式的性质,方程两边同时乘x,再同时除以
| 1 |
| 6 |
(3)依据等式的性质,方程两边同时乘
| 5 |
| 8 |
解答:解:(1)
x=
,
x÷
=
÷
,
x=
;
(2)
÷x=
,
÷x×x=
×x,
÷
=
x÷
,
x=4;
(3)X÷
=
,
X÷
×
=
×
,
x=
.
| 5 |
| 8 |
| 1 |
| 12 |
| 5 |
| 8 |
| 5 |
| 8 |
| 1 |
| 12 |
| 5 |
| 8 |
x=
| 2 |
| 15 |
(2)
| 2 |
| 3 |
| 1 |
| 6 |
| 2 |
| 3 |
| 1 |
| 6 |
| 2 |
| 3 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 6 |
x=4;
(3)X÷
| 5 |
| 8 |
| 10 |
| 17 |
X÷
| 5 |
| 8 |
| 5 |
| 8 |
| 10 |
| 17 |
| 5 |
| 8 |
x=
| 25 |
| 68 |
点评:本题主要考查学生运用等式的性质解方程的能力.
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