(1.9-1.9×0.9)÷(3.8-2.8)等于?
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(1.9-1.9×0.9)÷(3.8-2.8)等于?
(1.9-1.9×0.9)÷(3.8-2.8)等于?
(1.9-1.9×0.9)÷(3.8-2.8)等于?
(1.9-1.9×0.9)÷(3.8-2.8)
=(1.9-1.9×0.9)÷1
=(1.9-1.9×0.9)
=1.9×(1-0.9)
=1.9x0.1
=0.19
=1.9*(1-0.9)÷1.0
=1.9*0.1*1.0
=0.19
=0.19 ÷1
=0.19
(1.9-1.9×0.9)÷(3.8-2.8)
=[1.9×(1-0.9)]÷1
=1.9×0.1
=0.19
(1.9-1.9×0.9)÷(3.8-2.8)
=1.9﹙1﹣0.9)÷1
=1.9×0.1
=0.19
(1.9-1.9×0.9)÷(3.8-2.8)等于?
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