160乘25%-1.3x=17.9 x/5-x/6=0.4 3(x+2)=40+11 0.3/0.5=x+1/2x-1 2.5/(x—0.5)=25% 1/3:0.25=80%:x160乘25%-1.3x=17.9x/5-x/6=0.43(x+2)=40+110.3/0.5=x+1/2x-12.5/(x—0.5)=25%1/3:0.25=80%:x

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160乘25%-1.3x=17.9x/5-x/6=0.43(x+2)=40+110.3/0.5=x+1/2x-12.5/(x—0.5)=25%1/3:0.25=80%:x160乘25%-1.3x=17

160乘25%-1.3x=17.9 x/5-x/6=0.4 3(x+2)=40+11 0.3/0.5=x+1/2x-1 2.5/(x—0.5)=25% 1/3:0.25=80%:x160乘25%-1.3x=17.9x/5-x/6=0.43(x+2)=40+110.3/0.5=x+1/2x-12.5/(x—0.5)=25%1/3:0.25=80%:x
160乘25%-1.3x=17.9 x/5-x/6=0.4 3(x+2)=40+11 0.3/0.5=x+1/2x-1 2.5/(x—0.5)=25% 1/3:0.25=80%:x
160乘25%-1.3x=17.9
x/5-x/6=0.4
3(x+2)=40+11
0.3/0.5=x+1/2x-1
2.5/(x—0.5)=25%
1/3:0.25=80%:x

160乘25%-1.3x=17.9 x/5-x/6=0.4 3(x+2)=40+11 0.3/0.5=x+1/2x-1 2.5/(x—0.5)=25% 1/3:0.25=80%:x160乘25%-1.3x=17.9x/5-x/6=0.43(x+2)=40+110.3/0.5=x+1/2x-12.5/(x—0.5)=25%1/3:0.25=80%:x
160*25%-1.3x=17.9
1.3x=40-17.9
x=22.1/1.3
x=17