用递等式计算．49200÷24-18983.5×1.6+4.65÷3.156+815×（23-14）303÷[（72-37）×67]．

Question

用递等式计算．
49200÷24-1898
3.5×1.6+4.65÷3.1
(5)/(6)+(8)/(15)×（(2)/(3)-(1)/(4)）  
303÷[（72-37）×(6)/(7)]．

Answer 1

（1）49200÷24-1898
=2050-1898
=153

（2）3.5×1.6+4.65÷3.1
=5.6+1.5
=7.1

（3）(5)/(6)+(8)/(15)×（(2)/(3)-(1)/(4)）  
=(5)/(6)+(8)/(15)×(5)/(12)
=(5)/(6)+(2)/(9)
=(19)/(18)

（4）303÷[（72-37）×(6)/(7)]
=303÷[35×(6)/(7)]
=303÷30
=10.1