(x-1/8x):(260-x十1/8x十1/8x)=7:6
6(7x/8)=7(260-3x/4)
21x/4=1820-21x/4
21x/2=1820
x=3640/21
x=520/3
(x-(1/8)x):(260-x+(1/8)x+(1/8)x)=7:6
(7/8)x :(260-(3/4)x)=7:6
(7/8)x / (260-(3/4)x)=7/6
x / [8(260-(3/4)x)]=1/6
6x = 8(260-(3/4)x)
3x = 4(260-(3/4)x)
3x = 1040 -3x
6x=1040
x=1040/3
6*(x-1/8×)=7*(260-x十1/8x十1/8x)
6*7/8x=7*（260-3/4x）=7*260-7*3/4x
3/4x=260-3/4x
3/2x=260
x=520/3
(x-1/8x)=7
(260-x＋1/8x+1/8x)=6
7/8x=7
260-(6/8x)=6
x=49/8
-(6/8x)=-254
-(3/4x)=-254
x=-254*4/3
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