(1-40%)x-(1-40%)x×(1-20%)=60
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(1-40%)x-(1-40%)x×(1-20%)=60
(1-40%)x-(1-40%)x×(1-20%)=60
(1-40%)x-(1-40%)x×(1-20%)=60
(1-40%)x-(1-40%)xx(1-20%)=60
(1-40%)x20%x=60
60%x20%x=60
x=500
1-40%)x-(1-40%)x×(1-20%)=60
(1-40%)x×0.2=60
0.6×0.2x=60
x=500
x{x+1}{x-1}}x-2}{x-3}-40
x{x+1}{x-2}{x-3}-40
分解因式:x(x-1)(x+2)(x+3)-40
x/x+(1-x)/x-1/x
解方程 x-1%x=19.8x-40%x=15x+25%x=2.550%x+x=31.5x-15%x=8.5
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解分式方程:1/X-2+1/X-6=1/X-7+1/X-11/X-2+1/X-6=1/X-7+1/X-11/(x-2)-1/(x-1)=1/(x-7)-1/(x-6)(x-1-x+2)/(x-2)(x-1)=(x-6-x+7)/(x-7)(x-6)1/(x-2)(x-1)=1/(x-7)(x-6)(x-2)(x-1)=(x-7)(x-6)x^2-3x+2=x^2-13x+4213x-3x=42-210x=40x=4 为什么要移向才能解
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(x+40)/60-x/40=1+0.5,x=?
x/40+x/50=1+1/200*x
解方程:x-40%x+12=x-1/4
x-1/5x-40%x=20 怎么解
解方程;x-1/3x-40%x=100
(1-x)(400+40x)=300x=?
X-40%X-1/3X=15求算式
X-40%X-1/3X=15
x*(1+40/100)*0.8-x=15 X=?