4(x+5)=2-3(2x-7)

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4(x+5)=2-3(2x-7)

4(x+5)=2-3(2x-7)
4(x+5)=2-3(2x-7)
 

4(x+5)=2-3(2x-7)
 

解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x- *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? (1)X-3/X-1+X²-2/(x-1)(X-7)=1+x-5/x-7 (2)2x-1/x+4-5=96/x²-16-1-3x/4-x (1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8(2) 已知x+3/(x-2)^2=A/x-2 + B/(x-2)^2 ,求A和B的值. 2x+3x+4x+5x+x+6x+7x=100 方程 3x(7-2x)+5x(2x-1)=4x(x-3)+56 解方程 x(2x-5)=4x-10 x+5x+7=3x+11 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? x+5/x+1-3x-3/x+5=8x+28/x^2+4X-5-2(x+5)/(x+1)-(3x-3)/(x+5)=(8x+28)/(x^2+4X-5)-2 x+1分之x+2减去x+3分之x+4=x+5分之x+6减去X+7分之x+8 (解方程) 4.2-0.6x=3.6x 5x+2x=33.6 7x-4x=0.75 2x+7x+2.1=12 56x-32x-119=361 x+5=2x 3x+9=6x 4x-28=2x 2x+18=7x 5x=25*4-15x 7x-x+2*3=29.4 (28.8+5.5x+3.2)除2=71 (1)-4x+6=5x-3 (2) 1-3x=7x+4 (3)-2x-7x+5=3x-x-6 (4)-3x+3=1-x-4x (5)5x-3x+7=1-3x(6)-x+2+3x=4-2x 60%x+25=40 x+30%x=52 19-120%x=7 4分之3x-5%x=17.5 x-10%x=18 (1-25%)x=36 2x+30%x=9.2 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),求f’(1) (1)(5-x)/(x-4)+1/(4-x)=1(2)1/(x^3+2x^2+x) + 1/(x^2+2x+1) =5/(2^2+2x)(3)(1-x)/(1+x+x^2) + 6/(1-x)=7/(1-x)(4)52/(x-8)=48/x + 4/(x-26)