题目内容
解方程.
x=
x-
=
x÷
=
.
| 2 |
| 5 |
| 1 |
| 4 |
| 5 |
| 9 |
| 5 |
| 3 |
| 10 |
| 3 |
| 1 |
| 8 |
| 2 |
| 3 |
考点:方程的解和解方程
专题:简易方程
分析:(1)把方程的两边同时除以
即可;
(2)先把方程的两边同时减去
,再同时除以
即可;
(3)先把方程的两边同时乘
即可.
| 2 |
| 5 |
(2)先把方程的两边同时减去
| 5 |
| 3 |
| 5 |
| 9 |
(3)先把方程的两边同时乘
| 1 |
| 8 |
解答:
解:(1)
x=
x÷
=
÷
x=
(2)
x-
=
x-
+
=
+
x=5
x÷
=5÷
x=9
(3)x÷
=
x÷
×
=
×
x=
.
| 2 |
| 5 |
| 1 |
| 4 |
| 2 |
| 5 |
| 2 |
| 5 |
| 1 |
| 4 |
| 2 |
| 5 |
x=
| 5 |
| 8 |
(2)
| 5 |
| 9 |
| 5 |
| 3 |
| 10 |
| 3 |
| 5 |
| 9 |
| 5 |
| 3 |
| 5 |
| 3 |
| 10 |
| 3 |
| 5 |
| 3 |
| 5 |
| 9 |
| 5 |
| 9 |
| 5 |
| 9 |
| 5 |
| 9 |
x=9
(3)x÷
| 1 |
| 8 |
| 2 |
| 3 |
x÷
| 1 |
| 8 |
| 1 |
| 8 |
| 2 |
| 3 |
| 1 |
| 8 |
x=
| 1 |
| 12 |
点评:本题考查了根据等式的性质解方程的方法,计算时要细心,注意把等号对齐.
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