题目内容
x-
| 2.8:x=7:3. |
(1)x-
x=42,
x=42,
x÷
=42÷
,
x=54;
(2)2.8:x=7:3,
7x=2.8×3,
7x=8.4,
7x÷7=8.4÷7,
x=1.2.
| 2 |
| 9 |
| 7 |
| 9 |
| 7 |
| 9 |
| 7 |
| 9 |
| 7 |
| 9 |
x=54;
(2)2.8:x=7:3,
7x=2.8×3,
7x=8.4,
7x÷7=8.4÷7,
x=1.2.
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