7x-5/4=3/82x-1/6=5x+1/81/2x-7=9x-2/62x+1/3-5x-1/6=13/10(200+

来源：学生作业帮编辑：神马作文网作业帮分类：数学作业时间：2024/11/12 08:36:08

7x-5/4=3/8
2x-1/6=5x+1/8
1/2x-7=9x-2/6
2x+1/3-5x-1/6=1
3/10(200+x)-2/10(300-x)=300*9/25

1.7x=3/8+5/4 x=(3/8+5/4)/7 = 13/56
2.2x-5x=1/8+1/6 -3x=15/24 x= -5/24
3.1/2x-9x=-2/6+7 -17/2x= 20/3 x= -40/51
4.-3x=1-1/3+1/6 -3x=5/6 x= - 5/18
5.3/10*200+3/10*x - 2/10*300+2/10*x = 300*9/25
3/10*x+2/10*x = 300*9/25
5/10*x = 300*9/25
x=300*9/25*10/5
=216

1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550 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 |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| 1x()+2x()+3x()+4x()+5x()+6x()+7x()+8x()加9x()+10x()=1980 1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少已知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 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 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?