题目内容
a÷
=a÷3×7.______.
| 3 |
| 7 |
a÷
=a×
=
a;
a÷3×7,
=a×
×7,
=
×7,
=
a;
a=
a;
左右两边相等;
故答案为:√.
| 3 |
| 7 |
| 7 |
| 3 |
| 7 |
| 3 |
a÷3×7,
=a×
| 1 |
| 3 |
=
| a |
| 3 |
=
| 7 |
| 3 |
| 7 |
| 3 |
| 7 |
| 3 |
左右两边相等;
故答案为:√.
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