题目内容
x÷24-6
| 0.4×(x-1.5)=1.6 | 3
|
(1)x÷24-6
=2
,
x÷24-6
+6
=2
+6
,
x÷24×24=8
×24,
x=204;
(2)0.4×(x-1.5)=1.6,
0.4×(x-1.5)÷0.4=1.6÷0.4,
x-1.5+1.5=4+1.5,
x=5.5;
(3)3
-5x=2,
3
-5x+5x=2+5x,
2+5x=3
,
2+5x-2=3
-2,
5x=
,
5x÷5=
÷5,
x=
.
| 7 |
| 20 |
| 3 |
| 20 |
x÷24-6
| 7 |
| 20 |
| 7 |
| 20 |
| 3 |
| 20 |
| 7 |
| 20 |
x÷24×24=8
| 1 |
| 2 |
x=204;
(2)0.4×(x-1.5)=1.6,
0.4×(x-1.5)÷0.4=1.6÷0.4,
x-1.5+1.5=4+1.5,
x=5.5;
(3)3
| 1 |
| 2 |
3
| 1 |
| 2 |
2+5x=3
| 1 |
| 2 |
2+5x-2=3
| 1 |
| 2 |
5x=
| 3 |
| 2 |
5x÷5=
| 3 |
| 2 |
x=
| 3 |
| 10 |
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