0.2x+(1-0.25)*0.2x+12=0.5x怎么解
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0.2x+(1-0.25)*0.2x+12=0.5x怎么解
0.2x+(1-0.25)*0.2x+12=0.5x怎么解
0.2x+(1-0.25)*0.2x+12=0.5x怎么解
0.2x+(1-0.25)*0.2x+12=0.5x
0.2x-0.15x+12=0.5x
0.5x-0.2x+0.15x=12
0.45x=12
x=80/3
0.2x+(1-0.25)*0.2x+12=0.5x
0.2x+0.15x+12=0.5x
0.5x-0.2x-0.15x=12
0.15x=12
x=12/0.15
x=80
移项x-0.2x-0.5x=18+0.1-3 0.3x=15.1 x=15.1÷0.3 x=50又3分之1 0.2x+18+0.1+0.5x-3=x 0.7x+15.1=x x-0.7x=15.1
(x-1)+(x+2)+0.2x+2x=46
求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13
求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13
1/2X^3-1/4X+0.2X^2+0.25x-0.5x^3-1/5x^2的值与x无关
化简(2x-5)(3x+2)-6(x+1)(x-2),其中x=0.2
要列式1/12x(-6)+(-1/2) 4x1x(-5) 3x(-2)x(-6)x(-5) (-5)x 8 x(-6)x(-0.25) (-0.125)x (-7) x 5 x(-16) (8/15)x 1.25 x 9/2(-3)x 5/6 x(-0.2)x(-2/7) (-2)x(-6/5)x 10/3 x(-1/4) (-19/14)x 3
0.3x+7x-0.25x=21.58.7×(36-x)=04(不知道是x还是× 都解了吧)x或者×(x+0.2)=1.27(x+6)-3x=4x(2x+5)3(x+2)=4(x+1)18-4x=2x-63.8x+1.2x=256x+1.5x=15呼呼.累死我了 着急
X+1/0.2-2X=0.1x+0.2/0.03:
x/x+(1-x)/x-1/x
解不等式 0.2x>0.3x+1 0.5x-1
(x+1)/0.3-2x=(0.1x+0.2)/0.05
x-2/0.2-x+1/0.5=3 x=?
x-2/0.2-x+1/0.5=3求x
x/0.2x+1:x取何值分式有意义
0.2x-6=1.6x+1 x=?
1/2x的2次方-1/4x+0.2x的三次方+0.25x-1/5x的三次方其中x=-1
(x+1)×(x-1)-2>x×(x+3)解不等式 0.2x-0.3/0.2-x+1/6<1
(1+0.2)X=(X-64)/0.