(1)4(2x-1)-3(5x+2)=3(2-x)
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(1)4(2x-1)-3(5x+2)=3(2-x)
(2)2x-3/5x=3/2x-1/2-2/5x+2
(3)y-(y-1)/2=2-(y+3)/5
(4)(x-2)/5-(x+3)/10=(2x-5)/3=3
(5)[2(x+1)+1]/3-[2-3(x+1)]/4=x
(6)30%(2x-1)+20%(x+5)=250×25%
请写出计算过程(至少3步),求100%全对,
(2)2x-3/5x=3/2x-1/2-2/5x+2
(3)y-(y-1)/2=2-(y+3)/5
(4)(x-2)/5-(x+3)/10=(2x-5)/3=3
(5)[2(x+1)+1]/3-[2-3(x+1)]/4=x
(6)30%(2x-1)+20%(x+5)=250×25%
请写出计算过程(至少3步),求100%全对,
(1)8x-4-15x-6=6-3x
-4x=16
x=-4
(2)1.4x=1.5x-0.5-0.4x+2
0.3x=1.5
x=5
(3)y-0.5y+0.5=2-0.2y-0.6
0.7y=0.9
y=9/7
(4)有问题
(5)4[2(x+1)+1]-3[2-3(x+1)]=12x
8x+8+4-6+9x+9=12x
5x=-15
x=-3
(6)3(2x-1)+2(x+5)=25×25
6x-3+2x+10=625
8x=618
x=77.25
-4x=16
x=-4
(2)1.4x=1.5x-0.5-0.4x+2
0.3x=1.5
x=5
(3)y-0.5y+0.5=2-0.2y-0.6
0.7y=0.9
y=9/7
(4)有问题
(5)4[2(x+1)+1]-3[2-3(x+1)]=12x
8x+8+4-6+9x+9=12x
5x=-15
x=-3
(6)3(2x-1)+2(x+5)=25×25
6x-3+2x+10=625
8x=618
x=77.25
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
1x+2x+3x+4x+5x+6x+7x…+99x=100
(X+2)/(X+1)-(X+4)/(X+3)=(X+6)/(X+5)-(X+8)/(X+7)
解方程:2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
(x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几?