0.8*(100-x)+(1+10%)x=100*(1+4%) 得x=80.
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0.8*(100-x)+(1+10%)x=100*(1+4%)得x=80.0.8*(100-x)+(1+10%)x=100*(1+4%)得x=80.0.8*(100-x)+(1+10%)x=100*(
0.8*(100-x)+(1+10%)x=100*(1+4%) 得x=80.
0.8*(100-x)+(1+10%)x=100*(1+4%) 得x=80.
0.8*(100-x)+(1+10%)x=100*(1+4%) 得x=80.
0.8*(100-x)+(1+10%)x=100*(1+4%)
80-0.8x+1.1x=104
0.3x=24
x=80
x(x-1)(x-2)...(x-99)(x-100)
x*(1+40/100)*0.8-x=15 X=?
10/150x-1=10/100x.求x
100/x+1/2=150/(x+10) x=?
（X-1)/0.2 -X/0.8 =10
100(3x-1)+10x+(2x+1)=100(2x+1)+10x+(3x+1)+99
100(3x-1)+10x+(2x+1)=100(2x+1)+10x+(3x-1)+99
100（3X-1)+10X+(2X+1)=100(2X+1)+10X+(3X-1)+99
0.8*(100-x)+(1+10%)x=100*(1+4%) 得x=80.
100-2x+5x=120(x+3)×5-2x=30100-(4x+1)-(4x+1)=204x+8=6x-10
100-2x+5x=120(x+3)×5-2x=30100-(4x+1)-(4x+1)=204x+8=6x-10
2（6X方+X）方-11（6X方+X）+5X四次方-10X方+9X三次方-7X方+12X（X+Y)方+2(X+Y)-15A四次方-21A方-100（X方+X）方-14（X方+X）+24X方（X-1）-Y方（X-1)
（X+X)+(X-X)+(X*X)+(X/X)=100
(x-1)/(x+3x+2)+6/(2+x-x)-(10-x)/(4-x)
因式分解(x+1)(x+2)-x-10(x²-x)²-18(x²-x)+72
(x^2-x)^2-18(x^2-x)+72(x+1)(x+2)-x-10
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1
X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4)