题目内容
解方程.
X÷
|
5X-4.7X=
|
| ||||||||||||
|
X÷
|
|
(1)x÷
=
,
x÷
×
=
×
,
x=
;
(2)5x-4.7x=
,
0.3x=
,
0.3x÷0.3=
÷0.3,
x=3;
(3)
x+8=122,
x+8-8=122-8,
x÷
=114÷
,
x=171;
(4)
÷x=
,
÷x×x=
×x,
÷
=
x÷
,
x=
;
(5)x÷
=
,
x÷
×
=
×
,
x=
;
(6)
×x=
,
×x÷
=
÷
,
x=1
.
| 5 |
| 6 |
| 4 |
| 5 |
x÷
| 5 |
| 6 |
| 5 |
| 6 |
| 4 |
| 5 |
| 5 |
| 6 |
x=
| 2 |
| 3 |
(2)5x-4.7x=
| 9 |
| 10 |
0.3x=
| 9 |
| 10 |
0.3x÷0.3=
| 9 |
| 10 |
x=3;
(3)
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
x=171;
(4)
| 5 |
| 6 |
| 15 |
| 16 |
| 5 |
| 6 |
| 15 |
| 16 |
| 5 |
| 6 |
| 15 |
| 16 |
| 15 |
| 16 |
| 15 |
| 16 |
x=
| 8 |
| 9 |
(5)x÷
| 5 |
| 12 |
| 4 |
| 5 |
x÷
| 5 |
| 12 |
| 5 |
| 12 |
| 4 |
| 5 |
| 5 |
| 12 |
x=
| 1 |
| 3 |
(6)
| 11 |
| 13 |
| 12 |
| 13 |
| 11 |
| 13 |
| 11 |
| 13 |
| 12 |
| 13 |
| 11 |
| 13 |
x=1
| 1 |
| 11 |
练习册系列答案
相关题目