4(X-1)-10(2.9一2X)=3(2X+1)

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4(X-1)-10(2.9一2X)=3(2X+1)
4(X-1)-10(2.9一2X)=3(2X+1)

4(X-1)-10(2.9一2X)=3(2X+1)

4(X-1)-10(2.9一2X)=3(2X+1) 求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X (1)(X一3)(X一2)十18=(X十9)(X十1) (2)(3X十4)(3X一4)<9(X一2(1)(X一3)(X一2)十18=(X十9)(X十1)(2)(3X十4)(3X一4)<9(X一2)(X十3) 4(2X一9)+3(X一15)=7(X一1)一2 (1)解方程:1/X+1/X(X+1)+1/(X+1)(X+2)+1/(X+2)(X+3)+.+1/(X+9)(X+10)=0(2)计算:1/(X+2)+1/(X+1)(X+3)+1/(X+2)(X+4)+.+1/(X+2007)(X+2009)一楼的:题没有错唉~二楼的: 解方程与不等式:(1)(x一3)(x一2)+18=(x+9)(x+1); (2)(3x+4)(3x一4)<9(x一2)(x+3). 10一4(x^2+x一3)≤2(一2x^2十x一1) 5x+2(1一3x)=3(2一0.5x)x=? (x十2)(x的2次方-X十1)一(X-1)(x的2次方十2x一3),其中x=2 3/2[X/3(1/4X一l)一2=1一3/4X求解. (1十1/2)X(1十1/4)X(1十1/6)X(1十1/8)X(1十1/10)X(1一1/3)X(1一1/5)X(1-1/7)X(1-1/9) 一| x^2-3x-4|>x+1 二| x^2-2x-3|>x-2 7x+6=8-3X和6-3(X+2\3)=2\3和4X-3(20一x)=6X-7(9-X)和2x十1\3-5X-1\6=1. 计算:(2x一1)^2一(x^5一4x^4)÷x^3 (1)3X十6X一5=0 (2)4X一X一9=0, 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 (x的次方一X十4)X一(X一1)(x的次方十2)=x十7 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-