(0.72*0.4*3.5)/(0.9*0.2*7)简算

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(0.72*0.4*3.5)/(0.9*0.2*7)简算

(0.72*0.4*3.5)/(0.9*0.2*7)简算
(0.72*0.4*3.5)/(0.9*0.2*7)简算

(0.72*0.4*3.5)/(0.9*0.2*7)简算
(0.72*0.4*3.5)/(0.9*0.2*7)
=(0.9*8*0.2*7)/(0.9*0.2*7)
=8*(0.9*0.2*7)/(0.9*0.2*7)
=8

(0.72/0.9)*(0.4/0.2)*(3.5/7)=
0.3*2*0.5=0.3

(0.72*0.4*3.5)/(0.9*0.2*7)
=(0.9*8*0.4*0.5*7)/(0.9*0.2*7)
=(0.9*8*0.2*7)/(0.9*0.2*7)
=8*(0.9*0.2*7)/(0.9*0.2*7)
=8