1200/x-1200/(1.5x)=10
1200/x-1200/(1.5x)=10
1200/x+10=1200/1.5x
1200/x-10=1200/1.5x
1200/x=1200/1.5x +10
1200/x-10=1200/1.5x怎么算,
5x-10=1.5x*4+2,求x
2.5(X+Y)=1200 10/3(X-Y)=1200
(X+X*20%)-[(1200-X)-(1200-X)*20%]=40%
X+X*20%-(1200-X)-(1200-X)*20%=40%
4.5X-X=16.2检验 1.5X+18=3X检验
10%X=0.4 X+25%X=10 9%X-4.5×0.2=1.8
12.5+6x=13.1 x-二十分之三x=18.7 2x+1.5x=17.5 x-二分之一x=4