x+4+x-4+4x+x/4=100,
1个回答
各个x相加.整数X有6个,加1/4个X,就是6.25个X
正负4相互抵消,相当一4-4么.
所以6.25X=100 x=100/6.25
当然换算成分数形式就是25x/4=100
suoyi x=16
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