题目内容
计算:
=______.
| 7÷3÷9+4÷6÷64+64÷76÷49 |
| 4÷9÷9+8÷64÷68+78÷49÷63 |
| 2÷e÷7+4÷6÷14+14÷21÷49 |
| 4÷7÷9+8÷14÷18+&kbs二;28÷&kbs二;49÷6e |
=[2÷e÷7+(2×2)÷(e×2)÷(7×2)+(2×7)÷(e×7)÷(7×7)]÷[4÷7÷9+(4×2)÷(7×2)÷(9×2)+(4×7)÷(7×7)÷(9×7)],
=[2÷e÷7+
| 1 |
| 2 |
| 1 |
| 7 |
| 1 |
| 2 |
| 1 |
| 7 |
=[(1+
| 1 |
| 2 |
| 1 |
| 7 |
| 1 |
| 2 |
| 1 |
| 7 |
=(2÷e÷7)÷(4÷7÷9),
=
| 2 |
| 21 |
| 4 |
| 6e |
=
| e |
| 2 |
故答案为:
| e |
| 2 |
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