递等式计算 能简算的简算.5100-912*47/57 10.7-4.9+3.3-5.1
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递等式计算 能简算的简算.5100-912*47/57 10.7-4.9+3.3-5.1
(7分之4+25分之1)*7+25分之18 7分之5/{1/(3分之2-0.2)}
(7分之4+25分之1)*7+25分之18 7分之5/{1/(3分之2-0.2)}
![递等式计算 能简算的简算.5100-912*47/57 10.7-4.9+3.3-5.1](/uploads/image/z/6727020-60-0.jpg?t=%E9%80%92%E7%AD%89%E5%BC%8F%E8%AE%A1%E7%AE%97+%E8%83%BD%E7%AE%80%E7%AE%97%E7%9A%84%E7%AE%80%E7%AE%97.5100-912%2A47%2F57+10.7-4.9%2B3.3-5.1)
1)5100-912×47/57
=5100-752
=4348
2)10.7-4.9+3.3-5.1
=10.7+3.3-(4.9+5.1)
=14-10
=4
3)(4/7+1/25)×7+18/25
=4/7×7+1/25×7+18/25
=4+7/25+18/25
=4+1
=5
4)5/7÷{1/(2/3-0.2)}
=5/7÷{1/(2/3-1/5)}
=5/7÷{1/(10/15-3/15)}
=5/7÷{1/(7/15)}
=5/7÷15/7
=5/7×7/15
=1/3
=5100-752
=4348
2)10.7-4.9+3.3-5.1
=10.7+3.3-(4.9+5.1)
=14-10
=4
3)(4/7+1/25)×7+18/25
=4/7×7+1/25×7+18/25
=4+7/25+18/25
=4+1
=5
4)5/7÷{1/(2/3-0.2)}
=5/7÷{1/(2/3-1/5)}
=5/7÷{1/(10/15-3/15)}
=5/7÷{1/(7/15)}
=5/7÷15/7
=5/7×7/15
=1/3