题目内容
解方程
(1)3χ+
=
(2)χ+
χ=
(3)4:0.6=χ:0.12.
(1)3χ+
| 1 |
| 2 |
| 5 |
| 3 |
(2)χ+
| 4 |
| 9 |
| 10 |
| 21 |
(3)4:0.6=χ:0.12.
(1)3x+
=
,
3x+
-
=
-
,
3x=
,
3x÷3=
÷3,
x=
;
(2)x+
x=
,
x=
,
x÷
=
÷
,
x=
;
(3)4:0.6=χ:0.12,
0.6x=4×0.12,
0.6x÷0.6=0.48÷0.6,
x=0.8.
| 1 |
| 2 |
| 5 |
| 3 |
3x+
| 1 |
| 2 |
| 1 |
| 2 |
| 5 |
| 3 |
| 1 |
| 2 |
3x=
| 7 |
| 6 |
3x÷3=
| 7 |
| 6 |
x=
| 7 |
| 18 |
(2)x+
| 4 |
| 9 |
| 10 |
| 21 |
| 13 |
| 9 |
| 10 |
| 21 |
| 13 |
| 9 |
| 13 |
| 9 |
| 10 |
| 21 |
| 13 |
| 9 |
x=
| 30 |
| 91 |
(3)4:0.6=χ:0.12,
0.6x=4×0.12,
0.6x÷0.6=0.48÷0.6,
x=0.8.
练习册系列答案
相关题目