题目内容
解方程.
x=
×
(1+
)x=22
x÷
=18
x÷
=
÷
.
| 8 |
| 9 |
| 1 |
| 6 |
| 16 |
| 51 |
(1+
| 3 |
| 8 |
| 3 |
| 4 |
| 1 |
| 6 |
x÷
| 6 |
| 35 |
| 26 |
| 45 |
| 13 |
| 25 |
考点:方程的解和解方程
专题:简易方程
分析:(1)先进行整理,然后依据等式的性质,方程两边同时除以
求解;
(2)先化简方程,再依据等式的性质,方程两边同时除以
求解;
(3)依据等式的性质,方程两边同时乘
,然后方程的两边同时除以
;
(4)依据等式的性质,方程两边同时乘
即可.
| 8 |
| 9 |
(2)先化简方程,再依据等式的性质,方程两边同时除以
| 11 |
| 8 |
(3)依据等式的性质,方程两边同时乘
| 1 |
| 8 |
| 3 |
| 4 |
(4)依据等式的性质,方程两边同时乘
| 6 |
| 35 |
解答:
解:(1)
x=
×
x=
x÷
=
÷
x=
;
(2)(1+
)x=22
x=22
x÷
=22÷
x=16;
(3)
x÷
=18
x÷
×
=18×
x÷
=3÷
x=4;
(4)x÷
=
÷
x÷
×
=
÷
×
x=
.
| 8 |
| 9 |
| 1 |
| 6 |
| 16 |
| 51 |
| 8 |
| 9 |
| 8 |
| 153 |
| 8 |
| 9 |
| 8 |
| 9 |
| 8 |
| 153 |
| 8 |
| 9 |
x=
| 1 |
| 17 |
(2)(1+
| 3 |
| 8 |
| 11 |
| 8 |
| 11 |
| 8 |
| 11 |
| 8 |
| 11 |
| 8 |
x=16;
(3)
| 3 |
| 4 |
| 1 |
| 6 |
| 3 |
| 4 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 6 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
x=4;
(4)x÷
| 6 |
| 35 |
| 26 |
| 45 |
| 13 |
| 25 |
x÷
| 6 |
| 35 |
| 6 |
| 35 |
| 26 |
| 45 |
| 13 |
| 25 |
| 6 |
| 35 |
x=
| 4 |
| 21 |
点评:本题考查了运用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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