计算:2÷3÷7+4÷6÷14+14÷21÷494÷7÷9+8÷14÷18+28÷49÷63=3232
计算:2÷3÷7+4÷6÷14+14÷21÷494÷7÷9+8÷14÷18+28÷49÷63=3232....
计算:2÷3÷7+4÷6÷14+14÷21÷494÷7÷9+8÷14÷18+28÷49÷63=3232.
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2÷3÷7+4÷6÷14+14÷21÷49 |
4÷7÷9+8÷14÷18+ 28÷ 49÷63 |
=[2÷3÷7+(2×2)÷(3×2)÷(7×2)+(2×7)÷(3×7)÷(7×7)]÷[4÷7÷9+(4×2)÷(7×2)÷(9×2)+(4×7)÷(7×7)÷(9×7)],
=[2÷3÷7+
1 |
2 |
1 |
7 |
1 |
2 |
1 |
7 |
=[(1+
1 |
2 |
1 |
7 |
1 |
2 |
1 |
7 |
=(2÷3÷7)÷(4÷7÷9),
=
2 |
21 |
4 |
63 |
=
3 |
2 |
故答案为:
3 |
2 |
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