题目内容
0.9x-0.6x=1.8
+
x=
0.3:x=17:5.1.
| 3 |
| 4 |
| 2 |
| 5 |
| 9 |
| 10 |
0.3:x=17:5.1.
(1)0.9x-0.6x=1.8
0.3x=1.8,
0.3x÷0.3=1.8÷0.3,
x=6;
(2)
+
x=
,
+
x-
=
-
,
x=
,
x÷
=
÷
,
x=
;
(3)0.3:x=17:5.1,
17x=0.3×5.1,
17x÷17=1.53÷17,
x=0.09.
0.3x=1.8,
0.3x÷0.3=1.8÷0.3,
x=6;
(2)
| 3 |
| 4 |
| 2 |
| 5 |
| 9 |
| 10 |
| 3 |
| 4 |
| 2 |
| 5 |
| 3 |
| 4 |
| 9 |
| 10 |
| 3 |
| 4 |
| 2 |
| 5 |
| 3 |
| 20 |
| 2 |
| 5 |
| 2 |
| 5 |
| 3 |
| 20 |
| 2 |
| 5 |
x=
| 3 |
| 8 |
(3)0.3:x=17:5.1,
17x=0.3×5.1,
17x÷17=1.53÷17,
x=0.09.
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