题目内容
解方程:
6+
x=10
x+
x=12
x÷
=
.
6+
| 7 |
| 10 |
| 2 |
| 3 |
| 3 |
| 5 |
x÷
| 5 |
| 8 |
| 10 |
| 17 |
分析:(1)根据等式的性质,在方程两边同时减去6,再乘上
来解.
(2)先化简,根据等式的性质,在方程两边同时乘上
来解.
(3)根据等式的性质,在方程两边同时乘上
来解.
| 10 |
| 7 |
(2)先化简,根据等式的性质,在方程两边同时乘上
| 15 |
| 19 |
(3)根据等式的性质,在方程两边同时乘上
| 5 |
| 8 |
解答:解:(1)6+
x=10,
6+
x-6=10-6,
x×
=4×
,
x=5
;
(2)
x+
x=12,
x=12,
x ×
= 12×
,
x=9
;
(3)x÷
=
,
x÷
×
=
×
,
x=
.
| 7 |
| 10 |
6+
| 7 |
| 10 |
| 7 |
| 10 |
| 10 |
| 7 |
| 10 |
| 7 |
x=5
| 5 |
| 7 |
(2)
| 2 |
| 3 |
| 3 |
| 5 |
| 19 |
| 15 |
| 19 |
| 15 |
| 15 |
| 19 |
| 15 |
| 19 |
x=9
| 9 |
| 19 |
(3)x÷
| 5 |
| 8 |
| 10 |
| 17 |
x÷
| 5 |
| 8 |
| 5 |
| 8 |
| 10 |
| 17 |
| 5 |
| 8 |
x=
| 25 |
| 68 |
点评:本题考查了学生利用等式的性质解方程的能力,注意等号要对齐.
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