(1+1/2lg9-lg240)/(1-2/3lg27+lg36/5)+1

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(1+1/2lg9-lg240)/(1-2/3lg27+lg36/5)+1
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(1+1/2lg9-lg240)/(1-2/3lg27+lg36/5)+1
(1+1/2lg9-lg240)/(1-2/3lg27+lg36/5)+1

(1+1/2lg9-lg240)/(1-2/3lg27+lg36/5)+1
0
要过程给我留言
(1+1/2lg9-lg240)/(1-2/3lg27+lg36/5)+1
=(1+lg3-1g240)/(1-lg9+lg36/5)+1
=(1-lg80)/(1-lg5/4)+1
=-1g8/lg8+1
=-1+1
=0