用递等式计算.(1)2184-[(44×19+44)÷5](2)(2.5-2.5×0.6)÷0.25(3) ( 4 5 + 1
用递等式计算.(1)2184-[(44×19+44)÷5](2)(2.5-2.5×0.6)÷0.25(3)(45+14)÷75+56(4)15÷[(23+15)×113]...
用递等式计算.(1)2184-[(44×19+44)÷5](2)(2.5-2.5×0.6)÷0.25(3) ( 4 5 + 1 4 )÷ 7 5 + 5 6 (4) 1 5 ÷[( 2 3 + 1 5 )× 1 13 ] .
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(1)2184-[(44×19+44)÷5], =2184-[(19+1)×44÷5], =2184-[20×44÷5], =2184-[880÷5], =2184-176, =2008; (2)(2.5-2.5×0.6)÷0.25, =[2.5×(1-0.6)]÷0.25, =[2.5×0.4]÷0.25, =1÷0.25, =4; (3) (
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