题目内容
| 解方程. 9×1.8-10x=1.8 | x-
| ||||||||
x÷
|
|
(1)9×1.8-10x=1.8
16.2-10x+10x=1.8+10x
16.2-1.8=1.8+10x-1.8
14.4÷10=10x÷10
x=1.44;
(2)x-
x=
×
x=
x÷
=
÷
x=
;
(3)x÷
=
x÷
×
=
×
x=
;
(4)
x÷
=12
x=12
x÷
=12÷
x=4
.
16.2-10x+10x=1.8+10x
16.2-1.8=1.8+10x-1.8
14.4÷10=10x÷10
x=1.44;
(2)x-
| 1 |
| 5 |
| 4 |
| 3 |
| 3 |
| 10 |
| 4 |
| 5 |
| 2 |
| 5 |
| 4 |
| 5 |
| 4 |
| 5 |
| 2 |
| 5 |
| 4 |
| 5 |
x=
| 1 |
| 2 |
(3)x÷
| 4 |
| 5 |
| 15 |
| 28 |
x÷
| 4 |
| 5 |
| 4 |
| 5 |
| 15 |
| 28 |
| 4 |
| 5 |
x=
| 3 |
| 7 |
(4)
| 2 |
| 3 |
| 1 |
| 4 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
x=4
| 1 |
| 2 |
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