(1+1/3)x=28 (1-2/7)x=40 x-2/5x=36 x+4/7x=55 急(1+1/3)x=28(1-2/7)x=40x-2/5x=36x+4/7x=55

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(1+1/3)x=28(1-2/7)x=40x-2/5x=36x+4/7x=55急(1+1/3)x=28(1-2/7)x=40x-2/5x=36x+4/7x=55(1+1/3)x=28(1-2/7)x

(1+1/3)x=28 (1-2/7)x=40 x-2/5x=36 x+4/7x=55 急(1+1/3)x=28(1-2/7)x=40x-2/5x=36x+4/7x=55
(1+1/3)x=28 (1-2/7)x=40 x-2/5x=36 x+4/7x=55 急
(1+1/3)x=28
(1-2/7)x=40
x-2/5x=36
x+4/7x=55

(1+1/3)x=28 (1-2/7)x=40 x-2/5x=36 x+4/7x=55 急(1+1/3)x=28(1-2/7)x=40x-2/5x=36x+4/7x=55
 

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 请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360 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 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 || 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x x(x^2-1)+2x^2 *(x+1)-3x*(2x-5)=x(3x^2-4x)-28 1/x-2=7x/(x-2) -3 (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. 解方程:(2x-3)(x+1)-x(x-7)=(x-3)(x+2) 方程 3x(7-2x)+5x(2x-1)=4x(x-3)+56 (X-3分之x-1-x分之x-4)除以x的平方+3x分之(x+3)(x-2),其中(x-1)(x-2)=0 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? (1)6+2(x-3)=X (2)8-2(x-7)=x-(x-4) (3)2x-(1.5x-1)=2(1.5x-1) (1)(2x/x-1)-(x-1/x)=1 (2)(x^2-4x/x^2-1)+1=2x/x+1 (3)(x+4/x^2+2x)-(1/x+2)=(2/x)+1 (1)(2x/x-1)-(x-1/x)=1 (2)(x^2-4x/x^2-1)+1=2x/x+1 (3)(x+4/x^2+2x)-(1/x+2)=(2/x)+1 求和:Sn=1+3x+5x*x+7x*x*x+……+(2n-1)x^n-1 (x不为0和1)