x+20%x =40
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x+20%x=40x+20%x=40x+20%x=40x+20%x=401.2x=40x=100/31.2x=40x=40/1.2x=100/3x+20%x=40x+0.2x=40(1+0.2)x=4
x+20%x =40
x+20%x =40
x+20%x =40
x+20%x =40
1.2x=40
x=100/3
1.2x=40
x=40/1.2
x=100/3
x+20%x =40
x+0.2x=40
(1+0.2)x=40
1.2x=40
x=40÷1.2
x=100/3
x=33.333333333333333333333333
(X+X*20%)-[(1200-X)-(1200-X)*20%]=40%
X+X*20%-(1200-X)-(1200-X)*20%=40%
x+20%x =40
x+(x-20)=40
x+20%x=40
x-40%x=
(16x-13)/(4x-3)-(20x-24)/(4x-5)=(32x-30)/(8x-7)-(40x-43)/(8x-9)求x
x-20%x-40/20%x+40=3
20/(x-20)=(2x-40)/(x+40)
2x/40%=x+20x=?
解方程:x+x+15=20+40+x
解方程:3x-20+4x=x+40
x-30%x-30%x-20=40 如何解,
解方程 :40X-300=(X+15)(X-20)
方程:x-40%x=1300-x-20如何解
x-1/5x-40%x=20 怎么解
方程40%X+20/9X+18=X
X+(X+40)+(2X-20)=320