2又2/3*(1又7/8-5/6)除[3又1/4/(1/8+1又5/6)]有符号打错:2又2/3*(1又7/8-5/6)除[3又1/4除(1/8+1又5/6)]
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2又2/3*(1又7/8-5/6)除[3又1/4/(1/8+1又5/6)]有符号打错:2又2/3*(1又7/8-5/6)除[3又1/4除(1/8+1又5/6)]
2又2/3*(1又7/8-5/6)除[3又1/4/(1/8+1又5/6)]
有符号打错:2又2/3*(1又7/8-5/6)除[3又1/4除(1/8+1又5/6)]
2又2/3*(1又7/8-5/6)除[3又1/4/(1/8+1又5/6)]有符号打错:2又2/3*(1又7/8-5/6)除[3又1/4除(1/8+1又5/6)]
2又2/3*(1又7/8-5/6)除[3又1/4/(1/8+1又5/6)]
= 8/3*(1又7/8-5/6)*(1/8+1又5/6)/3又1/4
= 8/3*(15/8-5/6)*(1/8+11/6)*4/7
=(8/3*15/8-8/3*5/6)*(1/8*4/7+11/6*4/7)
=(5-20/9)*(1/14+22/21)
=25/9*47/42
=1175/378
数字有问题
I don't know
2又2/3*(1又7/8-5/6)除[3又1/4/(1/8+1又5/6)]
= 8/3*(1又7/8-5/6)*(1/8+1又5/6)/3又1/4
= 8/3*(15/8-5/6)*(1/8+11/6)*4/7
=(8/3*15/8-8/3*5/6)*(1/8*4/7+11/6*4/7)
=(5-20/9)*(1/14+22/21)
=25/9*47/42...
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2又2/3*(1又7/8-5/6)除[3又1/4/(1/8+1又5/6)]
= 8/3*(1又7/8-5/6)*(1/8+1又5/6)/3又1/4
= 8/3*(15/8-5/6)*(1/8+11/6)*4/7
=(8/3*15/8-8/3*5/6)*(1/8*4/7+11/6*4/7)
=(5-20/9)*(1/14+22/21)
=25/9*47/42
=1175/378
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