(5.4*0.75*1.3)\(2.5*3.9*0.27)简便运算,

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(5.4*0.75*1.3)\(2.5*3.9*0.27)简便运算,

(5.4*0.75*1.3)\(2.5*3.9*0.27)
=(5.4/0.27)*(0.75/2.5)*(1.3/3.9)
=20*0.3*1/3
=6*1/3
=2