(1/2)123÷123又123/332+(2/333+4/333+6/333+…332/333)-(1/333+3/333+5/333+…33

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(1/2)123÷123又123/332+(2/333+4/333+6/333+…332/333)-(1/333+3/333+5/333+…33
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(1/2)123÷123又123/332+(2/333+4/333+6/333+…332/333)-(1/333+3/333+5/333+…33
(1/2)123÷123又123/332+(2/333+4/333+6/333+…332/333)-(1/333+3/333+5/333+…33

(1/2)123÷123又123/332+(2/333+4/333+6/333+…332/333)-(1/333+3/333+5/333+…33
原试=123/[123+123/332]+[2/333-1/333]+[4/333-3/333]+...+[332/333-331/333]
=123/[123(1+1/332]+[1/333]*166
=1/[333/332]+166/333
=332/333+166/333
=[332+166]/333
=498/333
=166/111