题目内容
解方程
|
| ||||||
| 0.6×(x-0.6)=0.6 | 7.2x-5.4x=25.2. |
(1)
x-5=
x-5+5=
+5
x=
x÷
=
÷
x=
;
(2)
÷x=3
÷x×5x=3×5x
15x=12
15x÷15=12÷15
x=
;
(3)0.6×(x-0.6)=0.6
0.6×(x-0.6)÷0.6=0.6÷0.6
x-0.6=1
x-0.6+0.6=1+0.6
x=1.6;
(4)7.2x-5.4x=25.2
1.8x=25.2
1.8x÷1.8=25.2÷1.8
x=14.
| 3 |
| 4 |
| 3 |
| 2 |
| 3 |
| 4 |
| 3 |
| 2 |
| 3 |
| 4 |
| 13 |
| 2 |
| 3 |
| 4 |
| 3 |
| 4 |
| 13 |
| 2 |
| 3 |
| 4 |
x=
| 26 |
| 3 |
(2)
| 12 |
| 5 |
| 12 |
| 5 |
15x=12
15x÷15=12÷15
x=
| 4 |
| 5 |
(3)0.6×(x-0.6)=0.6
0.6×(x-0.6)÷0.6=0.6÷0.6
x-0.6=1
x-0.6+0.6=1+0.6
x=1.6;
(4)7.2x-5.4x=25.2
1.8x=25.2
1.8x÷1.8=25.2÷1.8
x=14.
练习册系列答案
相关题目