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Xһ1حʮح2Xһ1حʮح3Xһ1حʮح4Xһ1lʮح5Xһ1...

൱55һʽľֵλڵ28Сֵ x=1/7 Сֵy=27/7

⣺7x+1=15 7x=14 x=2 40-5.5x=29

1.5+1.5X312+1.5 =1.5X443+1.5 =1.53+1.5 =0.5+1.5 =2

ش : 綫x,20-x5x-3(20-x)=525x-60+3x=528x=112x=14ȷ,Ϊȷ𰸡 Сح | 2014-01-11 11 4 ...

żʱ׳ĩΪ2,׳ĩΪ14!!=4x2 5!!=5x3x1 ...һʲô˼񩄩 1 >حһô...

Ҫֶμ㣬: ٵ2x+3

6֮حxʮح2֮حx12֮5xһ50 ⣺3/12x=5/12x-50 5/12x-3/12x=50 1/6x=50 x=300

2.311.5+1.57.69 =2.31+7.691.5 =101.5 =15

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